Merge pull request #6770 from dzhengfy/fix_clean_guest_ontarget

migration_iommu_device:fix missing cleanup on target host

Author: Yingshun

libvirt/tests/src/sriov/vIOMMU/migration_iommu_device.py

@@ -87,4 +87,5 @@ def setup_test():
             migration_obj.migration_test.ping_vm(vm, params)
             migration_obj.check_vm_cont_ping(False)
     finally:
+        migration_obj.cleanup_connection()
         test_obj.teardown_iommu_test()