[media] fc2580: add missing error status when probe() fails

We must return -ENODEV error on case probe() fails to detect chip.

Signed-off-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
diff --git a/drivers/media/tuners/fc2580.c b/drivers/media/tuners/fc2580.c
index db21902..12f916e 100644
--- a/drivers/media/tuners/fc2580.c
+++ b/drivers/media/tuners/fc2580.c
@@ -571,6 +571,7 @@
 	case 0x5a:
 		break;
 	default:
+		ret = -ENODEV;
 		goto err_kfree;
 	}