diff --git a/arch/arm64/mm/init.c b/arch/arm64/mm/init.c
index 87a0e3b6c146..7c225d0132b8 100644
--- a/arch/arm64/mm/init.c
+++ b/arch/arm64/mm/init.c
@@ -571,7 +571,7 @@ void free_initmem(void)
 {
 	free_reserved_area(lm_alias(__init_begin),
 			   lm_alias(__init_end),
-			   0, "unused kernel");
+			   POISON_FREE_INITMEM, "unused kernel");
 	/*
 	 * Unmap the __init region but leave the VM area in place. This
 	 * prevents the region from being reused for kernel modules, which