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: YueHaibing <yuehaibing@huawei.com>
Reviewed-by: Tobias Klauser <tklauser@distanz.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/ethoc.c

@@ -1246,8 +1246,7 @@ error:
 	mdiobus_unregister(priv->mdio);
 	mdiobus_free(priv->mdio);
 free2:
-	if (priv->clk)
-		clk_disable_unprepare(priv->clk);
+	clk_disable_unprepare(priv->clk);
 free:
 	free_netdev(netdev);
 out:
@@ -1271,8 +1270,7 @@ static int ethoc_remove(struct platform_device *pdev)
 			mdiobus_unregister(priv->mdio);
 			mdiobus_free(priv->mdio);
 		}
-		if (priv->clk)
-			clk_disable_unprepare(priv->clk);
+		clk_disable_unprepare(priv->clk);
 		unregister_netdev(netdev);
 		free_netdev(netdev);
 	}