Description of problem:
For vm with shared tpmstate(/var/lib/libvirt/swtpm), security context of swtpm.log was not restored after migration failed and vm shutdown
Later start vm will meet error:
'error: Requested operation is not valid: Setting different SELinux label on /var/log/swtpm/libvirt/qemu/vm2-swtpm.log which is already in use'

Version-Release number of selected component (if applicable):
libvirt-9.0.0-4.el9.x86_64
qemu-kvm-7.2.0-8.el9.x86_64
swtpm-0.8.0-1.el9.x86_64
libtpms-0.9.1-2.20211126git1ff6fe1f43.el9.x86_64

How reproducible:
100%

Steps to Reproduce:
1. mount /var/lib/libvirt/swtpm on a shared storage(on both hosts), e.g. NFS:

1. df -hT
   10..:/test/swtpm nfs4 70G 14G 57G 20% /var/lib/libvirt/swtpm
2. ls /var/lib/libvirt/swtpm/
   (nothing)

2. Define vm with vtpm from an xml

1. cat vm2.xml
   ...
   <cpu mode='host-model' check='partial'>
   <feature policy='disable' name='vmx'/>
   </cpu>
   ...
   <tpm model='tpm-crb'>
   <backend type='emulator' version='2.0'/>
   </tpm>
   ...
2. virsh define vm2.xml
   Domain 'vm2' defined from vm2.xml
3. ls /var/lib/libvirt/swtpm/
   44db1abb-17eb-4b8e-ac9e-c18549741b65

3. Start vm and check seclabel:

1. virsh start vm2
   Domain 'vm2' started
2. ll -hZ /var/log/swtpm/libvirt/qemu/vm2-swtpm.log
   rw-rr-. 1 tss tss system_u:object_r:svirt_image_t:s0:c62,c987 19K Feb 12 09:36 /var/log/swtpm/libvirt/qemu/vm2-swtpm.log

4. migrate to a host with different cpu features, to cause failure:

1. virsh migrate vm2 --live qemu+ssh://hostB/system --verbose
   root@hostB's password:
   error: operation failed: guest CPU doesn't match specification: missing features: ds,dtes64,avx512ifma,sha-ni,avx512vbmi,avx512vbmi2,gfni,vaes,vpclmulqdq,avx512bitalg,avx512-vpopcntdq,la57,rdpid,fsrm,wbnoinvd

1. ll -hZ /var/log/swtpm/libvirt/qemu/vm2-swtpm.log
   rw-rr-. 1 tss tss system_u:object_r:svirt_image_t:s0:c62,c987 19K Feb 12 09:36 /var/log/swtpm/libvirt/qemu/vm2-swtpm.log

5. Shutdown vm and check seclabel again:

1. virsh shutdown vm2
   Domain 'vm2' is being shutdown
2. virsh list --all
   Id Name State
   -------------------------------

• avocado-vtpm shut off
• vm2 shut off

1. ll -hZ /var/log/swtpm/libvirt/qemu/vm2-swtpm.log
   rw-rr-. 1 tss tss system_u:object_r:svirt_image_t:s0:c62,c987 20K Feb 12 09:37 /var/log/swtpm/libvirt/qemu/vm2-swtpm.log

6. Try to start vm again:

1. virsh start vm2
   error: Failed to start domain 'vm2'
   error: Requested operation is not valid: Setting different SELinux label on /var/log/swtpm/libvirt/qemu/vm2-swtpm.log which is already in use

1. ll -hZ /var/log/swtpm/libvirt/qemu/vm2-swtpm.log
   rw-rr-. 1 tss tss system_u:object_r:virt_log_t:s0 23K Feb 12 09:38 /var/log/swtpm/libvirt/qemu/vm2-swtpm.log

Actual results:
In step5, swtpm.log seclable wasn't restored. Then later start will encounter error.

Expected results:
selinux context of swtpm.log should be restored to system_u:object_r:virt_log_t:s0, like step6 shows.

Additional info:
1. Not reproduced for local tpmstate(/var/lib/libvirt/swtpm not mounted).
2. The vm must be freshly defined on shared tpmstate, otherwise only starting a vm defined on local tpmstate before can not reproduce this issue.
3. Not all kinds of migration failure can reproduce, e.g. migrate with local disk failure can not.