diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 71ad97c96075cdd105d3f9bb23bb4084c8db9c5b..04021e37120e63f9fac05978821b69202a14a8d7 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -6715,7 +6715,7 @@ static void __init memmap_init(void)
 {
 	unsigned long start_pfn, end_pfn;
 	unsigned long hole_pfn = 0;
-	int i, j, zone_id, nid;
+	int i, j, zone_id = 0, nid;
 
 	for_each_mem_pfn_range(i, MAX_NUMNODES, &start_pfn, &end_pfn, &nid) {
 		struct pglist_data *node = NODE_DATA(nid);