diff --git a/src/client/src/tscSql.c b/src/client/src/tscSql.c
index 106f62fb74168322be7d1102cf4c45a4ef3ed3df..fa7c1f83bac34c54fefa210c2b3913bcc11db118 100644
--- a/src/client/src/tscSql.c
+++ b/src/client/src/tscSql.c
@@ -110,6 +110,7 @@ static SSqlObj *taosConnectImpl(const char *ip, const char *user, const char *pa
     rpcClose(pDnodeConn);
     free(pObj->tscCorMgmtEpSet);
     free(pObj);
+    return NULL;
   }
   memcpy(pObj->tscCorMgmtEpSet, &corMgmtEpSet, sizeof(SRpcCorEpSet));