V4L/DVB (8778): radio: fix incorrect video_register_device result check

Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

drivers/media/radio/radio-aztech.c

@@ -394,8 +394,7 @@ static int __init aztech_init(void)
 	mutex_init(&lock);
 	aztech_radio.priv=&aztech_unit;
 
-	if(video_register_device(&aztech_radio, VFL_TYPE_RADIO, radio_nr)==-1)
-	{
+	if (video_register_device(&aztech_radio, VFL_TYPE_RADIO, radio_nr) < 0) {
 		release_region(io,2);
 		return -EINVAL;
 	}