add the error code

src/client/src/tscUtil.c

@@ -2169,18 +2169,27 @@ int tscSetMgmtIpListFromCfg(const char *first, const char *second) {
   tscMgmtIpSet.inUse = 0;
 
   if (first && first[0] != 0) {
-    if (strlen(first) >= TSDB_FQDN_LEN) return TSDB_CODE_INVALID_FQDN;
+    if (strlen(first) >= TSDB_FQDN_LEN) {
+      terrno = TSDB_CODE_INVALID_FQDN;
+      return -1;
+    }
     taosGetFqdnPortFromEp(first, tscMgmtIpSet.fqdn[tscMgmtIpSet.numOfIps], &tscMgmtIpSet.port[tscMgmtIpSet.numOfIps]);
     tscMgmtIpSet.numOfIps++;
   }
 
   if (second && second[0] != 0) {
-    if (strlen(second) >= TSDB_FQDN_LEN) return TSDB_CODE_INVALID_FQDN;
+    if (strlen(second) >= TSDB_FQDN_LEN) {
+      terrno = TSDB_CODE_INVALID_FQDN;
+      return -1;
+    }
     taosGetFqdnPortFromEp(second, tscMgmtIpSet.fqdn[tscMgmtIpSet.numOfIps], &tscMgmtIpSet.port[tscMgmtIpSet.numOfIps]);
     tscMgmtIpSet.numOfIps++;
   }
 
-  if ( tscMgmtIpSet.numOfIps == 0) return TSDB_CODE_INVALID_FQDN;
+  if ( tscMgmtIpSet.numOfIps == 0) {
+    terrno = TSDB_CODE_INVALID_FQDN;
+    return -1;
+  }
 
   return 0;
 }