fix: error msg incorrect when no enough memory to create vnode

source/dnode/mgmt/mgmt_vnode/src/vmHandle.c

@@ -225,6 +225,7 @@ int32_t vmProcessCreateVnodeReq(SVnodesMgmt *pMgmt, SNodeMsg *pMsg) {
   SVnode *pImpl = vnodeOpen(path, pMgmt->pTfs, msgCb);
   if (pImpl == NULL) {
     dError("vgId:%d, failed to create vnode since %s", createReq.vgId, terrstr());
+    code = terrno;
     goto _OVER;
   }
 

source/dnode/vnode/src/vnd/vnodeOpen.c

@@ -137,18 +137,21 @@ SVnode *vnodeOpen(const char *path, STfs *pTfs, SMsgCb msgCb) {
   // open query
   if (vnodeQueryOpen(pVnode)) {
     vError("vgId:%d failed to open vnode query since %s", TD_VID(pVnode), tstrerror(terrno));
+    terrno = TAOS_SYSTEM_ERROR(terrno);
     goto _err;
   }
 
   // vnode begin
   if (vnodeBegin(pVnode) < 0) {
     vError("vgId:%d failed to begin since %s", TD_VID(pVnode), tstrerror(terrno));
+    terrno = TAOS_SYSTEM_ERROR(terrno);
     goto _err;
   }
 
   // open sync
   if (vnodeSyncOpen(pVnode, dir)) {
     vError("vgId:%d failed to open sync since %s", TD_VID(pVnode), tstrerror(terrno));
+    terrno = TAOS_SYSTEM_ERROR(terrno);
     goto _err;
   }