[media] atmel-isc: remove the warning

Replace the 'IS_ERR_VALUE(irq)' with 'ret < 0' in
function 'atmel_isc_probe'.
Reported-by: NHans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: NSongjun Wu <songjun.wu@microchip.com>
Signed-off-by: NHans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@s-opensource.com>

drivers/media/platform/atmel/atmel-isc.c

@@ -1358,7 +1358,7 @@ static int atmel_isc_probe(struct platform_device *pdev)
 	}
 
 	irq = platform_get_irq(pdev, 0);
-	if (IS_ERR_VALUE(irq)) {
+	if (irq < 0) {
 		ret = irq;
 		dev_err(dev, "failed to get irq: %d\n", ret);
 		return ret;