fix UT, LiveMigrateVmJobCase MigrateVmFailCase SharedBlockShrinkSnapShotCase and     a. GetL2NetworkCandidateCase
@@ -1718,6 +1718,7 @@ public class KVMHost extends HostBase implements Host {
public void run(final FlowTrigger trigger, Map data) {
if (vDPANics.isEmpty()) {
trigger.next();
+ return;
}
GenerateVdpaCmd cmd = new GenerateVdpaCmd();
cmd.vmUuid = vmUuid;
@@ -1884,6 +1885,7 @@ public class KVMHost extends HostBase implements Host {
public void run(final FlowTrigger trigger, Map data) {
if (vDPANics.isEmpty()) {
trigger.next();
+ return;
}
DeleteVdpaCmd cmd = new DeleteVdpaCmd();
cmd.vmUuid = vmUuid;
