staging: i4l: act2000: fix use of return

checkpatch warns that return is not a function and as such the brace
after it is not required.

Signed-off-by: Sudip Mukherjee <sudip.mukherjee@codethink.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>