net: samsung: sxgbe: Make sxgbe_drv_remove() return void

sxgbe_drv_remove() returned zero unconditionally, so it can be converted
to return void without losing anything. The upside is that it becomes
more obvious in its callers that there is no error to handle.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/samsung/sxgbe/sxgbe_common.h

@@ -511,7 +511,7 @@ struct sxgbe_priv_data {
 struct sxgbe_priv_data *sxgbe_drv_probe(struct device *device,
 					struct sxgbe_plat_data *plat_dat,
 					void __iomem *addr);
-int sxgbe_drv_remove(struct net_device *ndev);
+void sxgbe_drv_remove(struct net_device *ndev);
 void sxgbe_set_ethtool_ops(struct net_device *netdev);
 int sxgbe_mdio_unregister(struct net_device *ndev);
 int sxgbe_mdio_register(struct net_device *ndev);

drivers/net/ethernet/samsung/sxgbe/sxgbe_main.c

@@ -2203,7 +2203,7 @@ struct sxgbe_priv_data *sxgbe_drv_probe(struct device *device,
  * Description: this function resets the TX/RX processes, disables the MAC RX/TX
  * changes the link status, releases the DMA descriptor rings.
  */
-int sxgbe_drv_remove(struct net_device *ndev)
+void sxgbe_drv_remove(struct net_device *ndev)
 {
 	struct sxgbe_priv_data *priv = netdev_priv(ndev);
 	u8 queue_num;
@@ -2231,8 +2231,6 @@ int sxgbe_drv_remove(struct net_device *ndev)
 	kfree(priv->hw);
 
 	free_netdev(ndev);
-
-	return 0;
 }
 
 #ifdef CONFIG_PM

drivers/net/ethernet/samsung/sxgbe/sxgbe_platform.c

@@ -172,9 +172,10 @@ static int sxgbe_platform_probe(struct platform_device *pdev)
 static int sxgbe_platform_remove(struct platform_device *pdev)
 {
 	struct net_device *ndev = platform_get_drvdata(pdev);
-	int ret = sxgbe_drv_remove(ndev);
 
-	return ret;
+	sxgbe_drv_remove(ndev);
+
+	return 0;
 }
 
 #ifdef CONFIG_PM