[media] go7007: fix return 0 for unsupported devices in go7007_usb_probe()

probe() should not return 0 for unsupported devices, but go7007_usb_probe() does.
The patch fixes it to return -ENODEV.
Found by Linux Driver Verification project (linuxtesting.org).
Signed-off-by: Alexey Khoroshilov <khoroshilov@ispras.ru>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

drivers/staging/media/go7007/go7007-usb.c

@@ -1124,7 +1124,7 @@ static int go7007_usb_probe(struct usb_interface *intf,
 	case GO7007_BOARDID_LIFEVIEW_LR192:
 		printk(KERN_ERR "go7007-usb: The Lifeview TV Walker Ultra "
 				"is not supported.  Sorry!\n");
-		return 0;
+		return -ENODEV;
 		name = "Lifeview TV Walker Ultra";
 		board = &board_lifeview_lr192;
 		break;
@@ -1140,7 +1140,7 @@ static int go7007_usb_probe(struct usb_interface *intf,
 	default:
 		printk(KERN_ERR "go7007-usb: unknown board ID %d!\n",
 				(unsigned int)id->driver_info);
-		return 0;
+		return -ENODEV;
 	}
 
 	go = go7007_alloc(&board->main_info, &intf->dev);