netlabel: Use genl_register_family_with_ops()

Use genl_register_family_with_ops() instead of a copy. This fixes genetlink
family leak on error path.

Signed-off-by: Michał Mirosław <mirq-linux@rere.qmqm.pl>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/netlabel/netlabel_mgmt.c b/net/netlabel/netlabel_mgmt.c
index 1821c5d..8203623 100644
--- a/net/netlabel/netlabel_mgmt.c
+++ b/net/netlabel/netlabel_mgmt.c
@@ -779,18 +779,6 @@
  */
 int __init netlbl_mgmt_genl_init(void)
 {
-	int ret_val, i;
-
-	ret_val = genl_register_family(&netlbl_mgmt_gnl_family);
-	if (ret_val != 0)
-		return ret_val;
-
-	for (i = 0; i < ARRAY_SIZE(netlbl_mgmt_genl_ops); i++) {
-		ret_val = genl_register_ops(&netlbl_mgmt_gnl_family,
-				&netlbl_mgmt_genl_ops[i]);
-		if (ret_val != 0)
-			return ret_val;
-	}
-
-	return 0;
+	return genl_register_family_with_ops(&netlbl_mgmt_gnl_family,
+		netlbl_mgmt_genl_ops, ARRAY_SIZE(netlbl_mgmt_genl_ops));
 }