[PATCH][linux-next] net/mlx5: Bridge, fix uninitialized variable in mlx5_esw_bridge_port_changeupper()

[Tim Gardner]

A recent change removed code that initialized the return code variable 'err'. It
is now possible for mlx5_esw_bridge_port_changeupper() to return an error code
using this uninitialized variable. Fix it by initializing to 0.

Addresses-Coverity: ("Uninitialized scalar variable (UNINIT)")

Cc: Saeed Mahameed <saeedm@xxxxxxxxxx>
Cc: Leon Romanovsky <leon@xxxxxxxxxx>
Cc: "David S. Miller" <davem@xxxxxxxxxxxxx>
Cc: Jakub Kicinski <kuba@xxxxxxxxxx>
Cc: Vlad Buslov <vladbu@xxxxxxxxxx>
Cc: Jianbo Liu <jianbol@xxxxxxxxxx>
Cc: Mark Bloch <mbloch@xxxxxxxxxx>
Cc: Roi Dayan <roid@xxxxxxxxxx>
Cc: Vladimir Oltean <vladimir.oltean@xxxxxxx>
Cc: netdev@xxxxxxxxxxxxxxx
Cc: linux-rdma@xxxxxxxxxxxxxxx
Cc: linux-kernel@xxxxxxxxxxxxxxx
Signed-off-by: Tim Gardner <tim.gardner@xxxxxxxxxxxxx>
---
 drivers/net/ethernet/mellanox/mlx5/core/en/rep/bridge.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en/rep/bridge.c b/drivers/net/ethernet/mellanox/mlx5/core/en/rep/bridge.c
index 0c38c2e319be..c6435c69b7c4 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en/rep/bridge.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en/rep/bridge.c
@@ -137,7 +137,7 @@ static int mlx5_esw_bridge_port_changeupper(struct notifier_block *nb, void *ptr
 	u16 vport_num, esw_owner_vhca_id;
 	struct netlink_ext_ack *extack;
 	int ifindex = upper->ifindex;
-	int err;
+	int err = 0;
 
 	if (!netif_is_bridge_master(upper))
 		return 0;
-- 
2.33.0