diff --git a/arch/sh/mm/init.c b/arch/sh/mm/init.c
index c9a517c8bbb6..33890fd267cb 100644
--- a/arch/sh/mm/init.c
+++ b/arch/sh/mm/init.c
@@ -412,19 +412,11 @@ void __init mem_init(void)
 	iommu_init();
 
 	high_memory = NULL;
+	for_each_online_pgdat(pgdat)
+		high_memory = max_t(void *, high_memory,
+				    __va(pgdat_end_pfn(pgdat) << PAGE_SHIFT));
 
-	for_each_online_pgdat(pgdat) {
-		void *node_high_memory;
-
-		if (pgdat->node_spanned_pages)
-			free_all_bootmem_node(pgdat);
-
-		node_high_memory = (void *)__va((pgdat->node_start_pfn +
-						 pgdat->node_spanned_pages) <<
-						 PAGE_SHIFT);
-		if (node_high_memory > high_memory)
-			high_memory = node_high_memory;
-	}
+	free_all_bootmem();
 
 	/* Set this up early, so we can take care of the zero page */
 	cpu_cache_init();