staging: lustre: fld_request.c: Remove else after return.

    This patch fixes checkpatch.pl warning.
    WARNING: else is not generally useful after a break or return

Signed-off-by: Alberto Pires de Oliveira Neto <mrpenguin2005@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>