[PATCH] nl80211: fix error pointer dereference in error handling

[Dan Carpenter <dan.carpenter@xxxxxxxxxx>]

The error handling calls kfree(params->acl) so if "params->acl" is an
error pointer that will lead to an Oops.

Fixes: 9e263e193af7 ("nl80211: don't put struct cfg80211_ap_settings on stack")
Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
---
 net/wireless/nl80211.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index 0b4f29d689d2..962fb169a5fb 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -5507,6 +5507,7 @@ static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
 		params->acl = parse_acl_data(&rdev->wiphy, info);
 		if (IS_ERR(params->acl)) {
 			err = PTR_ERR(params->acl);
+			params->acl = NULL;
 			goto out;
 		}
 	}
-- 
2.20.1