net: ethoc: Remove useless test before clk_disable_unprepare

clk_disable_unprepare() already checks that the clock pointer is valid.
No need to test it before calling it.
Signed-off-by: NYueHaibing <yuehaibing@huawei.com>
Reviewed-by: NTobias Klauser <tklauser@distanz.ch>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/net/ethernet/ethoc.c

@@ -1246,7 +1246,6 @@ static int ethoc_probe(struct platform_device *pdev)
 	mdiobus_unregister(priv->mdio);
 	mdiobus_free(priv->mdio);
 free2:
-	if (priv->clk)
 	clk_disable_unprepare(priv->clk);
 free:
 	free_netdev(netdev);
@@ -1271,7 +1270,6 @@ static int ethoc_remove(struct platform_device *pdev)
 			mdiobus_unregister(priv->mdio);
 			mdiobus_free(priv->mdio);
 		}
-		if (priv->clk)
 		clk_disable_unprepare(priv->clk);
 		unregister_netdev(netdev);
 		free_netdev(netdev);