staging: lustre: void function return statements are not generally useful.

This patch fixes checkpatch.pl warning.
WARNING: void function return statements are not generally useful
Signed-off-by: Alberto Pires de Oliveira Neto <mrpenguin2005@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/lustre/lustre/fld/fld_request.c

@@ -326,7 +326,6 @@ static int fld_client_proc_init(struct lu_client_fld *fld)
 
 void fld_client_proc_fini(struct lu_client_fld *fld)
 {
-	return;
 }
 #endif
 EXPORT_SYMBOL(fld_client_proc_fini);