mm/MIPS: prepare for killing free_all_bootmem_node()

Prepare for killing free_all_bootmem_node() by using free_all_bootmem().
Signed-off-by: Jiang Liu <jiang.liu@huawei.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Minchan Kim <minchan@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

arch/mips/sgi-ip27/ip27-memory.c

@@ -477,18 +477,8 @@ void __init paging_init(void)
 
 void __init mem_init(void)
 {
-	unsigned node;
-
 	high_memory = (void *) __va(get_num_physpages() << PAGE_SHIFT);
-
-	for_each_online_node(node) {
-		/*
-		 * This will free up the bootmem, ie, slot 0 memory.
-		 */
-		free_all_bootmem_node(NODE_DATA(node));
-	}
-
+	free_all_bootmem();
 	setup_zero_pages();	/* This comes from node 0 */
-
 	mem_init_print_info(NULL);
 }