nl80211: don't return err unconditionally in nl80211_start_ap()

[ Upstream commit bc7a39b4272b9672d806d422b6850e8c1a09914c ]

When a memory leak was fixed, a return err was changed to goto err,
but, accidentally, the if (err) was removed, so now we always exit at
this point.

Fix it by adding if (err) back.

Fixes: 9951ebfcdf2b ("nl80211: fix potential leak in AP start")
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/iwlwifi.20200626124931.871ba5b31eee.I97340172d92164ee92f3c803fe20a8a6e97714e1@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index b65180e874fb9587cbf21c5bc3283b8af1d71af6..a34bbca80f4988b8ffcafc92f2326713030867e9 100644 (file)
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -4798,7 +4798,8 @@ static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
                err = nl80211_parse_he_obss_pd(
                                        info->attrs[NL80211_ATTR_HE_OBSS_PD],
                                        &params.he_obss_pd);
-               goto out;
+               if (err)
+                       goto out;
        }
 
        nl80211_calculate_ap_params(&params);