repeated creation of the same supertable may deadlock

source/dnode/mnode/impl/src/mndStb.c

@@ -581,12 +581,11 @@ static int32_t mndProcessMCreateStbReq(SMnodeMsg *pReq) {
   }
 
   code = mndCreateStb(pMnode, pReq, &createReq, pDb);
+  if (code == 0) code = TSDB_CODE_MND_ACTION_IN_PROGRESS;
 
 CREATE_STB_OVER:
-  if (code != 0) {
+  if (code != 0 && code != TSDB_CODE_MND_ACTION_IN_PROGRESS) {
     mError("stb:%s, failed to create since %s", createReq.name, terrstr());
-  } else {
-    code = TSDB_CODE_MND_ACTION_IN_PROGRESS;
   }
 
   mndReleaseStb(pMnode, pStb);
@@ -1039,12 +1038,11 @@ static int32_t mndProcessMAlterStbReq(SMnodeMsg *pReq) {
   }
 
   code = mndAlterStb(pMnode, pReq, &alterReq, pDb, pStb);
+  if (code == 0) code = TSDB_CODE_MND_ACTION_IN_PROGRESS;
 
 ALTER_STB_OVER:
-  if (code != 0) {
+  if (code != 0 && code != TSDB_CODE_MND_ACTION_IN_PROGRESS) {
     mError("stb:%s, failed to alter since %s", alterReq.name, terrstr());
-  } else {
-    code = TSDB_CODE_MND_ACTION_IN_PROGRESS;
   }
 
   mndReleaseStb(pMnode, pStb);