net/mlx5e: Fix unused variable warning when CONFIG_MLX5_ESWITCH is off

In mlx5e_setup_tc "priv" variable is not being used if
CONFIG_MLX5_ESWITCH is off, one way to fix this is to actually use it.

mlx5e_setup_tc_mqprio also needs the "priv" variable and it extracts it
on its own. We can simply pass priv to mlx5e_setup_tc_mqprio instead of
netdev and avoid extracting the priv var, which will also resolve the
compiler warning.

Fixes: 4e95bc26 ("net: flow_offload: add flow_block_cb_setup_simple()")
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Reviewed-by: Mark Bloch <markb@mellanox.com>
Reviewed-by: Tariq Toukan <tariqt@mellanox.com>
CC: Nathan Chancellor <natechancellor@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/mellanox/mlx5/core/en_main.c

@@ -3390,10 +3390,9 @@ static int mlx5e_modify_channels_vsd(struct mlx5e_channels *chs, bool vsd)
 	return 0;
 }
 
-static int mlx5e_setup_tc_mqprio(struct net_device *netdev,
+static int mlx5e_setup_tc_mqprio(struct mlx5e_priv *priv,
 				 struct tc_mqprio_qopt *mqprio)
 {
-	struct mlx5e_priv *priv = netdev_priv(netdev);
 	struct mlx5e_channels new_channels = {};
 	u8 tc = mqprio->num_tc;
 	int err = 0;
@@ -3475,7 +3474,7 @@ static int mlx5e_setup_tc(struct net_device *dev, enum tc_setup_type type,
 						  priv, priv, true);
 #endif
 	case TC_SETUP_QDISC_MQPRIO:
-		return mlx5e_setup_tc_mqprio(dev, type_data);
+		return mlx5e_setup_tc_mqprio(priv, type_data);
 	default:
 		return -EOPNOTSUPP;
 	}