usb: gadget: r8a66597-udc: cleanup error path

With the updates for devm, the cleanup path no longer needs to
check for NULL device state, so remove it and return directly
if the irq resource missing

Signed-off-by: Ben Dooks <ben.dooks@codethink.co.uk>
Signed-off-by: Felipe Balbi <balbi@ti.com>

drivers/usb/gadget/r8a66597-udc.c

@@ -1878,9 +1878,8 @@ static int __init r8a66597_probe(struct platform_device *pdev)
 	irq_trigger = ires->flags & IRQF_TRIGGER_MASK;
 
 	if (irq < 0) {
-		ret = -ENODEV;
 		dev_err(dev, "platform_get_irq error.\n");
-		goto clean_up;
+		return -ENODEV;
 	}
 
 	/* initialize ucd */
@@ -1979,11 +1978,8 @@ clean_up2:
 		clk_put(r8a66597->clk);
 	}
 clean_up:
-	if (r8a66597) {
-		if (r8a66597->ep0_req)
-			r8a66597_free_request(&r8a66597->ep[0].ep,
-						r8a66597->ep0_req);
-	}
+	if (r8a66597->ep0_req)
+		r8a66597_free_request(&r8a66597->ep[0].ep, r8a66597->ep0_req);
 
 	return ret;
 }