[PATCH net-next] net/mlx5e: Fix error return code in mlx5e_tc_esw_init()

[Wei Yongjun]

Fix to return negative error code from the mlx5e_tc_tun_init() error
handling case instead of 0, as done elsewhere in this function.

This commit also using 0 instead of 'ret' when success since it is
always equal to 0.

Fixes: 8914add2c9e5 ("net/mlx5e: Handle FIB events to update tunnel endpoint 
device")
Reported-by: Hulk Robot <hul...@huawei.com>
Signed-off-by: Wei Yongjun <weiyongj...@huawei.com>
---
 drivers/net/ethernet/mellanox/mlx5/core/en_tc.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c 
b/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c
index db142ee96510..9f126054d371 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c
@@ -4750,10 +4750,12 @@ int mlx5e_tc_esw_init(struct rhashtable *tc_ht)
        lockdep_set_class(&tc_ht->mutex, &tc_ht_lock_key);
 
        uplink_priv->encap = mlx5e_tc_tun_init(priv);
-       if (IS_ERR(uplink_priv->encap))
+       if (IS_ERR(uplink_priv->encap)) {
+               err = PTR_ERR(uplink_priv->encap);
                goto err_register_fib_notifier;
+       }
 
-       return err;
+       return 0;
 
 err_register_fib_notifier:
        rhashtable_destroy(tc_ht);