failover: Fix error return code in net_failover_create

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>

1 files changed, 3 insertions, 1 deletions

diff --git a/drivers/net/net_failover.c b/drivers/net/net_failover.c
index 8524fe4fddea..e964d312f4ca 100644
--- a/drivers/net/net_failover.c
+++ b/drivers/net/net_failover.c
@@ -764,8 +764,10 @@ struct failover *net_failover_create(struct net_device *standby_dev)
         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;