The device driver should keep going even if debugfs initialization fails.
So, change the return type to void.
Signed-off-by: NJaejoong Kim <climbbb.kim@gmail.com>
Reviewed-by: NLaurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@s-opensource.com>