mm/m68k: prepare for killing free_all_bootmem_node()

Prepare for killing free_all_bootmem_node() by using free_all_bootmem().
Signed-off-by: NJiang Liu <jiang.liu@huawei.com>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Greg Ungerer <gerg@uclinux.org>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

arch/m68k/mm/init.c

@@ -148,12 +148,10 @@ void __init print_memmap(void)
 
 void __init mem_init(void)
 {
-	pg_data_t *pgdat;
 	int i;
 
 	/* this will put all memory onto the freelists */
-	for_each_online_pgdat(pgdat)
-		free_all_bootmem_node(pgdat);
+	free_all_bootmem();
 
 #if defined(CONFIG_MMU) && !defined(CONFIG_SUN3) && !defined(CONFIG_COLDFIRE)
 	/* insert pointer tables allocated so far into the tablelist */