net: af_can: remove useless parameter 'err' in 'can_rx_register()'

Since commit bdfb5765e45b remove NULL-ptr checks from users of
can_dev_rcv_lists_find(). 'err' parameter is useless, so remove it.

Signed-off-by: Ye Bin <yebin10@huawei.com>
Link: https://lore.kernel.org/all/20221208090940.3695670-1-yebin@huaweicloud.com
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>

diff --git a/net/can/af_can.c b/net/can/af_can.c
index c69168f..7343fd4 100644 (file)
--- a/net/can/af_can.c
+++ b/net/can/af_can.c
@@ -446,7 +446,6 @@ int can_rx_register(struct net *net, struct net_device *dev, canid_t can_id,
        struct hlist_head *rcv_list;
        struct can_dev_rcv_lists *dev_rcv_lists;
        struct can_rcv_lists_stats *rcv_lists_stats = net->can.rcv_lists_stats;
-       int err = 0;
 
        /* insert new receiver  (dev,canid,mask) -> (func,data) */
 
@@ -481,7 +480,7 @@ int can_rx_register(struct net *net, struct net_device *dev, canid_t can_id,
                                               rcv_lists_stats->rcv_entries);
        spin_unlock_bh(&net->can.rcvlists_lock);
 
-       return err;
+       return 0;
 }
 EXPORT_SYMBOL(can_rx_register);