fix: unreasonable error message when creating db with insufficient dnodes

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

@@ -398,11 +398,14 @@ static int32_t mndCheckDbCfg(SMnode *pMnode, SDbCfg *pCfg) {
   if (pCfg->precision < TSDB_MIN_PRECISION && pCfg->precision > TSDB_MAX_PRECISION) return -1;
   if (pCfg->compression < TSDB_MIN_COMP_LEVEL || pCfg->compression > TSDB_MAX_COMP_LEVEL) return -1;
   if (pCfg->replications < TSDB_MIN_DB_REPLICA || pCfg->replications > TSDB_MAX_DB_REPLICA) return -1;
-  if (pCfg->replications > mndGetDnodeSize(pMnode)) return -1;
   if (pCfg->replications != 1 && pCfg->replications != 3) return -1;
   if (pCfg->strict < TSDB_DB_STRICT_OFF || pCfg->strict > TSDB_DB_STRICT_ON) return -1;
   if (pCfg->cacheLastRow < TSDB_MIN_DB_CACHE_LAST_ROW || pCfg->cacheLastRow > TSDB_MAX_DB_CACHE_LAST_ROW) return -1;
   if (pCfg->hashMethod != 1) return -1;
+  if (pCfg->replications > mndGetDnodeSize(pMnode)) {
+    terrno = TSDB_CODE_MND_NO_ENOUGH_DNODES;
+    return -1;
+  }
 
   terrno = 0;
   return TSDB_CODE_SUCCESS;