[PATCH net] net: bonding: check register_netdevice_notifier() error in bonding_init()

bonding_init() ignores register_netdevice_notifier() errors and still
returns success, which can leave the bonding module loaded without its
netdev notifier registered.

Check the error and unwind prior initialization on failure.

Signed-off-by: Minhong He <[email protected]>
---
 drivers/net/bonding/bond_main.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/net/bonding/bond_main.c b/drivers/net/bonding/bond_main.c
index e1bec8164221..3405a20bd498 100644
--- a/drivers/net/bonding/bond_main.c
+++ b/drivers/net/bonding/bond_main.c
@@ -6637,7 +6637,9 @@ static int __init bonding_init(void)
 				flow_keys_bonding_keys,
 				ARRAY_SIZE(flow_keys_bonding_keys));
 
-	register_netdevice_notifier(&bond_netdev_notifier);
+	res = register_netdevice_notifier(&bond_netdev_notifier);
+	if (res)
+		goto err;
 out:
 	return res;
 err:
-- 
2.25.1