This patch fixes the issue with waiting for devices to disconnect during the end

stage of migration in Xend. The problem was cause by a deletion of the VM domain
ID which is used by testDevicecompleComplete ->deviceIDs->backendRoot() to get
the virtual backend device path. The virtual backend device path is used to
check if a device still exists in xenstore.

Signed-off-by: Yung Giang <yung.giang@gmail.com>

tools/python/xen/xend/XendDomainInfo.py

@@ -1684,7 +1684,6 @@ class XendDomainInfo:
         try:
             if self.domid is not None:
                 xc.domain_destroy(self.domid)
-                self.domid = None
                 for state in DOM_STATES_OLD:
                     self.info[state] = 0
                 self._stateSet(DOM_STATE_HALTED)