ptp: ptp_dte: remove redundant dev_err message

devm_ioremap_resource already contains error message, so remove
the redundant dev_err message

Signed-off-by: Ding Xiang <dingxiang@cmss.chinamobile.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/ptp/ptp_dte.c

@@ -248,11 +248,8 @@ static int ptp_dte_probe(struct platform_device *pdev)
 
 	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 	ptp_dte->regs = devm_ioremap_resource(dev, res);
-	if (IS_ERR(ptp_dte->regs)) {
-		dev_err(dev,
-			"%s: io remap failed\n", __func__);
+	if (IS_ERR(ptp_dte->regs))
 		return PTR_ERR(ptp_dte->regs);
-	}
 
 	spin_lock_init(&ptp_dte->lock);