diff --git a/arch/powerpc/mm/numa.c b/arch/powerpc/mm/numa.c
index b22a83a..8bb0b4d 100644
--- a/arch/powerpc/mm/numa.c
+++ b/arch/powerpc/mm/numa.c
@@ -969,7 +969,7 @@
 	.priority = 1 /* Must run before sched domains notifier. */
 };
 
-static void mark_reserved_regions_for_nid(int nid)
+static void __init mark_reserved_regions_for_nid(int nid)
 {
 	struct pglist_data *node = NODE_DATA(nid);
 	struct memblock_region *reg;