V4L/DVB (11595): stv090x: fixes a few bugs

This patch fixes:
* Cut revision was read too late
* Missing increment
* wrong return value
* mismatched entries

Signed-off-by: Andreas Regel <andreas.regel@gmx.de>
Signed-off-by: Manu Abraham <manu@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>