staging: lustre: obdclass: fix checking for obd_init_checks()

The obd_init_checks() function can either return -EOVERFLOW or -EINVAL
but we accidentally ignore -EINVAL returns.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/lustre/lustre/obdclass/class_obd.c

@@ -448,7 +448,7 @@ static int __init obdclass_init(void)
 	obd_zombie_impexp_init();
 
 	err = obd_init_checks();
-	if (err == -EOVERFLOW)
+	if (err)
 		return err;
 
 	class_init_uuidlist();