staging: lustre: lnet: Fix coding style errors

Replace a mix of tabs and spaces indentation by tabs only.

Errors were reported by checkpatch.pl as
WARNING: Statements should start on a tabstop
WARNING: suspect code indent for conditional statement

Signed-off-by: Maxime Rossi Bellom <mrossibellom@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>