seccomp: simplify sysctls with register_sysctl_init()

register_sysctl_paths() is only needed if you have childs (directories)
with entries. Just use register_sysctl_init() as it also does the
kmemleak check for you.
Acked-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Luis Chamberlain <mcgrof@kernel.org>

kernel/seccomp.c

@@ -2368,12 +2368,6 @@ static int seccomp_actions_logged_handler(struct ctl_table *ro_table, int write,
 	return ret;
 }
 
-static struct ctl_path seccomp_sysctl_path[] = {
-	{ .procname = "kernel", },
-	{ .procname = "seccomp", },
-	{ }
-};
-
 static struct ctl_table seccomp_sysctl_table[] = {
 	{
 		.procname	= "actions_avail",
@@ -2392,14 +2386,7 @@ static struct ctl_table seccomp_sysctl_table[] = {
 
 static int __init seccomp_sysctl_init(void)
 {
-	struct ctl_table_header *hdr;
-
-	hdr = register_sysctl_paths(seccomp_sysctl_path, seccomp_sysctl_table);
-	if (!hdr)
-		pr_warn("sysctl registration failed\n");
-	else
-		kmemleak_not_leak(hdr);
-
+	register_sysctl_init("kernel/seccomp", seccomp_sysctl_table);
 	return 0;
 }