net: ethernet: litex: Remove unnecessary print function dev_err()

The print function dev_err() is redundant because
platform_get_irq() already prints an error.
Signed-off-by: Xu Wang <vulab@iscas.ac.cn>
Reviewed-by: Cai Huoqing <caihuoqing@baidu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/litex/litex_liteeth.c

@@ -242,10 +242,8 @@ static int liteeth_probe(struct platform_device *pdev)
 	priv->dev = &pdev->dev;
 
 	irq = platform_get_irq(pdev, 0);
-	if (irq < 0) {
-		dev_err(&pdev->dev, "Failed to get IRQ %d\n", irq);
+	if (irq < 0)
 		return irq;
-	}
 	netdev->irq = irq;
 
 	priv->base = devm_platform_ioremap_resource_byname(pdev, "mac");