USB: EHCI: ehci-mv: fix error handling in mv_ehci_probe()

If the function platform_get_irq() failed, the negative value
returned will not be detected here. So fix error handling in
mv_ehci_probe(). And when get irq failed, the function
platform_get_irq() logs an error message, so remove redundant
message here.

Signed-off-by: Zhang Shengju <[email protected]>
Signed-off-by: Tang Bin <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Greg Kroah-Hartman <[email protected]>

Author: Tang Bin

drivers/usb/host/ehci-mv.c

@@ -167,9 +167,8 @@ static int mv_ehci_probe(struct platform_device *pdev)
 	hcd->regs = ehci_mv->op_regs;
 
 	hcd->irq = platform_get_irq(pdev, 0);
-	if (!hcd->irq) {
-		dev_err(&pdev->dev, "Cannot get irq.");
-		retval = -ENODEV;
+	if (hcd->irq < 0) {
+		retval = hcd->irq;
 		goto err_disable_clk;
 	}