[media] rc: make s_tx_carrier consistent

LIRC_SET_SEND_CARRIER should return 0 on success or -errno.

Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
diff --git a/drivers/media/rc/mceusb.c b/drivers/media/rc/mceusb.c
index 2d1585d..4f8c7ef 100644
--- a/drivers/media/rc/mceusb.c
+++ b/drivers/media/rc/mceusb.c
@@ -942,7 +942,7 @@
 
 	}
 
-	return carrier;
+	return 0;
 }
 
 /*