V4L/DVB: saa7134: remove stray unlock_kernel
An earlier commit removed the lock_kernel/unlock_kernel pair but forgot to remove the unlock_kernel call in the cleanup path at the end of the function. Signed-off-by: NHans Verkuil <hverkuil@xs4all.nl> Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>
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