net/mlx5: DR, Fix the SMFS sync_steering for fast teardown

If sync happens when the device is in fast teardown, just bail
and don't do anything, because the PCI device is not there any more.
Signed-off-by: Yevgeny Kliteynik <kliteyn@nvidia.com>
Reviewed-by: Alex Vesker <valex@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>

drivers/net/ethernet/mellanox/mlx5/core/steering/dr_cmd.c

@@ -271,6 +271,13 @@ int mlx5dr_cmd_sync_steering(struct mlx5_core_dev *mdev)
 {
 	u32 in[MLX5_ST_SZ_DW(sync_steering_in)] = {};
 
+	/* Skip SYNC in case the device is internal error state.
+	 * Besides a device error, this also happens when we're
+	 * in fast teardown
+	 */
+	if (mdev->state == MLX5_DEVICE_STATE_INTERNAL_ERROR)
+		return 0;
+
 	MLX5_SET(sync_steering_in, in, opcode, MLX5_CMD_OP_SYNC_STEERING);
 
 	return mlx5_cmd_exec_in(mdev, sync_steering, in);