diff --git a/source/dnode/vnode/src/tsdb/tsdbReadUtil.c b/source/dnode/vnode/src/tsdb/tsdbReadUtil.c
index 7db66cf47c..9f5f72e0aa 100644
--- a/source/dnode/vnode/src/tsdb/tsdbReadUtil.c
+++ b/source/dnode/vnode/src/tsdb/tsdbReadUtil.c
@@ -337,13 +337,14 @@ int32_t createDataBlockScanInfo(STsdbReader* pTsdbReader, SBlockInfoBuf* pBuf, c
   int64_t st = taosGetTimestampUs();
   code = initBlockScanInfoBuf(pBuf, numOfTables);
   if (code != TSDB_CODE_SUCCESS) {
+    tSimpleHashCleanup(pTableMap);
     return code;
   }
 
   pUidList->tableUidList = taosMemoryMalloc(numOfTables * sizeof(uint64_t));
   if (pUidList->tableUidList == NULL) {
     tSimpleHashCleanup(pTableMap);
-    return TSDB_CODE_OUT_OF_MEMORY;
+    return terrno;
   }
 
   pUidList->currentIndex = 0;