fix return error

source/client/src/clientEnv.c

@@ -375,7 +375,7 @@ int32_t openTransporter(const char *user, const char *auth, int32_t numOfThread,
   *pDnodeConn = rpcOpen(&rpcInit);
   if (*pDnodeConn == NULL) {
     tscError("failed to init connection to server.");
-    code = TSDB_CODE_FAILED;
+    code = terrno;
   }
 
   return code;

source/client/src/clientImpl.c

@@ -2467,6 +2467,7 @@ TSDB_SERVER_STATUS taos_check_server_status(const char* fqdn, int port, char* de
 
   clientRpc = rpcOpen(&rpcInit);
   if (clientRpc == NULL) {
+    code = terrno;
     tscError("failed to init server status client");
     goto _OVER;
   }

source/dnode/mgmt/node_mgmt/src/dmTransport.c

@@ -393,7 +393,7 @@ int32_t dmInitClient(SDnode *pDnode) {
   pTrans->clientRpc = rpcOpen(&rpcInit);
   if (pTrans->clientRpc == NULL) {
     dError("failed to init dnode rpc client");
-    return -1;
+    return terrno;
   }
 
   dDebug("dnode rpc client is initialized");
@@ -437,7 +437,7 @@ int32_t dmInitStatusClient(SDnode *pDnode) {
   pTrans->statusRpc = rpcOpen(&rpcInit);
   if (pTrans->statusRpc == NULL) {
     dError("failed to init dnode rpc status client");
-    return TSDB_CODE_OUT_OF_MEMORY;
+    return terrno;
   }
 
   dDebug("dnode rpc status client is initialized");
@@ -482,7 +482,7 @@ int32_t dmInitSyncClient(SDnode *pDnode) {
   pTrans->syncRpc = rpcOpen(&rpcInit);
   if (pTrans->syncRpc == NULL) {
     dError("failed to init dnode rpc sync client");
-    return TSDB_CODE_OUT_OF_MEMORY;
+    return terrno;
   }
 
   dDebug("dnode rpc sync client is initialized");

source/libs/function/src/udfd.c

@@ -1173,7 +1173,7 @@ int32_t udfdOpenClientRpc() {
   global.clientRpc = rpcOpen(&rpcInit);
   if (global.clientRpc == NULL) {
     fnError("failed to init dnode rpc client");
-    return -1;
+    return terrno;
   }
   return 0;
 }

source/libs/sync/test/sync_test_lib/src/syncIO.c

@@ -193,7 +193,7 @@ static int32_t syncIOStartInternal(SSyncIO *io) {
     io->clientRpc = rpcOpen(&rpcInit);
     if (io->clientRpc == NULL) {
       sError("failed to initialize RPC");
-      return -1;
+      return terrno;
     }
   }
 
@@ -214,7 +214,7 @@ static int32_t syncIOStartInternal(SSyncIO *io) {
     void *pRpc = rpcOpen(&rpcInit);
     if (pRpc == NULL) {
       sError("failed to start RPC server");
-      return -1;
+      return terrno;
     }
   }
 

source/libs/transport/test/cliBench.c

@@ -160,7 +160,7 @@ int main(int argc, char *argv[]) {
   void *pRpc = rpcOpen(&rpcInit);
   if (pRpc == NULL) {
     tError("failed to initialize RPC");
-    return -1;
+    return terrno;
   }
 
   tInfo("client is initialized");