[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>