qemuProcessStop: Reattach NVMe disks a domain is mirroring into

If the mirror destination is not a file but a NVMe disk, then
call qemuHostdevReAttachOneNVMeDisk() to reattach the NVMe back
to the host.

This would be done by blockjob code when the job finishes, but in
this case the job won't finish - QEMU is killed meanwhile.

Fixes: https://bugzilla.redhat.com/show_bug.cgi?id=1825785

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Peter Krempa <pkrempa@redhat.com>

src/qemu/qemu_process.c

@@ -7600,6 +7600,9 @@ void qemuProcessStop(virQEMUDriverPtr driver,
             if (disk->mirror) {
                 if (qemuSecurityRestoreImageLabel(driver, vm, disk->mirror, false) < 0)
                     VIR_WARN("Unable to restore security label on %s", disk->dst);
+
+                if (virStorageSourceChainHasNVMe(disk->mirror))
+                    qemuHostdevReAttachOneNVMeDisk(driver, vm->def->name, disk->mirror);
             }
 
             qemuBlockRemoveImageMetadata(driver, vm, disk->dst, disk->src);