mm: memory-failure: move sysctl register in memory_failure_init()

There is already a memory_failure_init(), don't add a new initcall, move
register_sysctl_init() into it to cleanup a bit.

Link: https://lkml.kernel.org/r/20230508114128.37081-2-wangkefeng.wang@huawei.comSigned-off-by: Kefeng Wang <wangkefeng.wang@huawei.com>
Acked-by: Naoya Horiguchi <naoya.horiguchi@nec.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

mm/memory-failure.c

@@ -123,7 +123,6 @@ const struct attribute_group memory_failure_attr_group = {
 	.attrs = memory_failure_attr,
 };
 
-#ifdef CONFIG_SYSCTL
 static struct ctl_table memory_failure_table[] = {
 	{
 		.procname	= "memory_failure_early_kill",
@@ -146,14 +145,6 @@ static struct ctl_table memory_failure_table[] = {
 	{ }
 };
 
-static int __init memory_failure_sysctl_init(void)
-{
-	register_sysctl_init("vm", memory_failure_table);
-	return 0;
-}
-late_initcall(memory_failure_sysctl_init);
-#endif /* CONFIG_SYSCTL */
-
 /*
  * Return values:
  *   1:   the page is dissolved (if needed) and taken off from buddy,
@@ -2441,6 +2432,8 @@ static int __init memory_failure_init(void)
 		INIT_WORK(&mf_cpu->work, memory_failure_work_func);
 	}
 
+	register_sysctl_init("vm", memory_failure_table);
+
 	return 0;
 }
 core_initcall(memory_failure_init);