net/mlx5: E-Switch, Fix switching to switchdev mode with IB device disabled

In case that IB device is already disabled when moving to switchdev mode,
which can happen when working with LAG, need to do rescan_drivers()
before leaving in order to add ethernet representor auxiliary device.

Fixes: ab85ebf ("net/mlx5: E-switch, refactor eswitch mode change")
Signed-off-by: Patrisious Haddad <[email protected]>
Reviewed-by: Mark Bloch <[email protected]>
Signed-off-by: Tariq Toukan <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Jakub Kicinski <[email protected]>

Author: PatrisiousHaddad

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

@@ -2338,6 +2338,7 @@ static void esw_mode_change(struct mlx5_eswitch *esw, u16 mode)
 
 	if (esw->dev->priv.flags & MLX5_PRIV_FLAGS_DISABLE_IB_ADEV) {
 		esw->mode = mode;
+		mlx5_rescan_drivers_locked(esw->dev);
 		mlx5_devcom_comp_unlock(esw->dev->priv.hca_devcom_comp);
 		return;
 	}