diff --git a/arch/arm/mm/init.c b/arch/arm/mm/init.c
index 27a40101dd3a..fd26b5c92b44 100644
--- a/arch/arm/mm/init.c
+++ b/arch/arm/mm/init.c
@@ -356,7 +356,7 @@ static inline void poison_init_mem(void *s, size_t count)
 		*p++ = 0xe7fddef0;
 }
 
-static inline void
+static inline void __init
 free_memmap(unsigned long start_pfn, unsigned long end_pfn)
 {
 	struct page *start_pg, *end_pg;