diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index e078e3acb3dea8dc5c34e2ba15788f2972a4b90a..3791bdc958bdb12d235c9a22c7e4a2f1bea0fe4e 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -6510,7 +6510,7 @@ void __init __weak 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);