Bug #20077 Cluster to only support partition by key, needs to error on others

sql/ha_ndbcluster.cc

@@ -9874,7 +9874,7 @@ uint ha_ndbcluster::set_up_partition_info(partition_info *part_info,
                           ndbcluster_hton_name,
                           "LIST, RANGE and HASH partition disabled by default,"
                           " use --new option to enable");
-      return HA_ERR_UNSUPPORTED;
+      DBUG_RETURN(HA_ERR_UNSUPPORTED);
     }
    /*
       Create a shadow field for those tables that have user defined