V4L/DVB: drivers/media/dvb/dvb-usb/dib0700: fix return values
Propagte correct error values instead of returning -1 which just means -EPERM ("Permission denied") Signed-off-by: Daniel Mack <daniel@caiaq.de> Signed-off-by: Douglas Schilling Landgraf <dougsland@redhat.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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