RDMA/irdma: Remove the redundant return

The type of the function i40iw_remove is void. So remove
the unnecessary return.

Link: https://lore.kernel.org/r/20220110073733.3221379-1-yanjun.zhu@linux.dev
Signed-off-by: Zhu Yanjun <yanjun.zhu@linux.dev>
Reviewed-by: Leon Romanovsky <leonro@nvidia.com>
Acked-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>

drivers/infiniband/hw/irdma/i40iw_if.c

@@ -198,7 +198,7 @@ static void i40iw_remove(struct auxiliary_device *aux_dev)
 							       aux_dev);
 	struct i40e_info *cdev_info = i40e_adev->ldev;
 
-	return i40e_client_device_unregister(cdev_info);
+	i40e_client_device_unregister(cdev_info);
 }
 
 static const struct auxiliary_device_id i40iw_auxiliary_id_table[] = {