staging/lustre/libcfs: Remove useless returns in void functions

Return at the end of a void function does not serve any particular
purpose and makes checkpatch unhappy, so eliminate them.

Signed-off-by: Oleg Drokin <green@linuxhacker.ru>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
4 files changed