media: dvb-frontends/stv0910: fix FE_HAS_LOCK check order in tune()

It should first read the status and then check if FE has lock.

Signed-off-by: Daniel Scheller <d.scheller@gmx.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
1 file changed