usb: phy: msm: Properly check result from platform_get_irq()

Function return negative code on error.
Signed-off-by: Ivan T. Ivanov <iivanov@mm-sol.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

drivers/usb/phy/phy-msm-usb.c

@@ -1413,7 +1413,7 @@ static int msm_otg_probe(struct platform_device *pdev)
 	dev_info(&pdev->dev, "OTG regs = %p\n", motg->regs);
 
 	motg->irq = platform_get_irq(pdev, 0);
-	if (!motg->irq) {
+	if (motg->irq < 0) {
 		dev_err(&pdev->dev, "platform_get_irq failed\n");
 		return motg->irq;
 	}