[PATCH 2/2] bpf: sockmap, potential uninitialized return in __sock_map_ctx_update_elem()

[Dan Carpenter]

Smatch complains that "err" might be uninitialized.  That seems
possible.  Anyway we can just return zero.

Fixes: e5cd3abcb31a ("bpf: sockmap, refactor sockmap routines to work with 
hashmap")
Signed-off-by: Dan Carpenter <dan.carpen...@oracle.com>

diff --git a/kernel/bpf/sockmap.c b/kernel/bpf/sockmap.c
index c6de1393df63..6298adb3162a 100644
--- a/kernel/bpf/sockmap.c
+++ b/kernel/bpf/sockmap.c
@@ -1821,7 +1821,7 @@ static int __sock_map_ctx_update_elem(struct bpf_map *map,
                list_add_tail(&e->list, &psock->maps);
        }
        write_unlock_bh(&sock->sk_callback_lock);
-       return err;
+       return 0;
 out_free:
        kfree(e);
        smap_release_sock(psock, sock);