From: YueHaibing <yuehaibing@huawei.com>
Date: Thu, 6 Sep 2018 21:04:12 +0800
Subject: failover: Fix error return code in net_failover_create
Patch-mainline: v4.20-rc1
Git-commit: 09317da317e55e70ccbe23f65008348a4a1b7c7f
References: bsc#1109837

if failover_register failed, 'err' code should be set correctly

Fixes: cfc80d9a1163 ("net: Introduce net_failover driver")
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
 drivers/net/net_failover.c |    4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

--- a/drivers/net/net_failover.c
+++ b/drivers/net/net_failover.c
@@ -765,8 +765,10 @@ struct failover *net_failover_create(str
 	netif_carrier_off(failover_dev);
 
 	failover = failover_register(failover_dev, &net_failover_ops);
-	if (IS_ERR(failover))
+	if (IS_ERR(failover)) {
+		err = PTR_ERR(failover);
 		goto err_failover_register;
+	}
 
 	return failover;