[PATCH net-next] net: filter: remove unused variable and fix warning

[Jakub Kicinski]

bpf_getsockopt bpf call sets the ret variable to zero and
never changes it.  What's worse in case CONFIG_INET is
not selected the variable is completely unused generating
a warning.

Signed-off-by: Jakub Kicinski <jakub.kicin...@netronome.com>
Reviewed-by: Quentin Monnet <quentin.mon...@netronome.com>
---
 net/core/filter.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/net/core/filter.c b/net/core/filter.c
index 721c30889033..a0112168d6f9 100644
--- a/net/core/filter.c
+++ b/net/core/filter.c
@@ -3288,7 +3288,6 @@ BPF_CALL_5(bpf_getsockopt, struct bpf_sock_ops_kern *, 
bpf_sock,
           int, level, int, optname, char *, optval, int, optlen)
 {
        struct sock *sk = bpf_sock->sk;
-       int ret = 0;
 
        if (!sk_fullsock(sk))
                goto err_clear;
@@ -3308,7 +3307,7 @@ BPF_CALL_5(bpf_getsockopt, struct bpf_sock_ops_kern *, 
bpf_sock,
        } else {
                goto err_clear;
        }
-       return ret;
+       return 0;
 #endif
 err_clear:
        memset(optval, 0, optlen);
-- 
2.14.1