diff --git a/arch/arm/mm/init.c b/arch/arm/mm/init.c
index 877c492f8e108e2ec275415677f051d5e5101fc5..40940d7ce4ffed4cf5be70f3c149013c9c3d5bbc 100644
--- a/arch/arm/mm/init.c
+++ b/arch/arm/mm/init.c
@@ -483,7 +483,7 @@ free_memmap(int node, unsigned long start_pfn, unsigned long end_pfn)
 	/*
 	 * Convert start_pfn/end_pfn to a struct page pointer.
 	 */
-	start_pg = pfn_to_page(start_pfn);
+	start_pg = pfn_to_page(start_pfn - 1) + 1;
 	end_pg = pfn_to_page(end_pfn);
 
 	/*