V4L/DVB: dvb: return -ENOMEM if kzalloc failed in dvb_usb_device_init()

If in a cold state and the download succeeded ret is zero, but we
should return -ENOMEM.

Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
diff --git a/drivers/media/dvb/dvb-usb/dvb-usb-init.c b/drivers/media/dvb/dvb-usb/dvb-usb-init.c
index e331db8..5d91f70 100644
--- a/drivers/media/dvb/dvb-usb/dvb-usb-init.c
+++ b/drivers/media/dvb/dvb-usb/dvb-usb-init.c
@@ -243,7 +243,7 @@
 		d = kzalloc(sizeof(struct dvb_usb_device),GFP_KERNEL);
 	if (d == NULL) {
 		err("no memory for 'struct dvb_usb_device'");
-		return ret;
+		return -ENOMEM;
 	}
 
 	d->udev = udev;