nl80211: Fix memory leaks on nla_put_failure error paths

Signed-hostap: Jouni Malinen <j@w1.fi>

src/drivers/driver_nl80211.c

@@ -1777,6 +1777,7 @@ static int nl80211_get_noise_for_scan_results(
 	return send_and_recv_msgs(drv, msg, get_noise_for_scan_results,
 				  scan_res);
  nla_put_failure:
+	nlmsg_free(msg);
 	return -ENOBUFS;
 }
 
@@ -6921,6 +6922,7 @@ static int i802_get_seqnum(const char *iface, void *priv, const u8 *addr,
 
 	return send_and_recv_msgs(drv, msg, get_key_handler, seq);
  nla_put_failure:
+	nlmsg_free(msg);
 	return -ENOBUFS;
 }
 
@@ -7011,6 +7013,7 @@ static int i802_flush(void *priv)
 
 	return send_and_recv_msgs(drv, msg, NULL, NULL);
  nla_put_failure:
+	nlmsg_free(msg);
 	return -ENOBUFS;
 }
 
@@ -7085,6 +7088,7 @@ static int i802_read_sta_data(void *priv, struct hostap_sta_driver_data *data,
 
 	return send_and_recv_msgs(drv, msg, get_sta_handler, data);
  nla_put_failure:
+	nlmsg_free(msg);
 	return -ENOBUFS;
 }
 
@@ -7141,7 +7145,9 @@ static int i802_set_tx_queue_params(void *priv, int queue, int aifs,
 
 	if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
 		return 0;
+	msg = NULL;
  nla_put_failure:
+	nlmsg_free(msg);
 	return -1;
 }
 
@@ -7167,6 +7173,7 @@ static int i802_set_sta_vlan(void *priv, const u8 *addr,
 		    if_nametoindex(ifname));
 
 	ret = send_and_recv_msgs(drv, msg, NULL, NULL);
+	msg = NULL;
 	if (ret < 0) {
 		wpa_printf(MSG_ERROR, "nl80211: NL80211_ATTR_STA_VLAN (addr="
 			   MACSTR " ifname=%s vlan_id=%d) failed: %d (%s)",
@@ -7174,6 +7181,7 @@ static int i802_set_sta_vlan(void *priv, const u8 *addr,
 			   strerror(-ret));
 	}
  nla_put_failure:
+	nlmsg_free(msg);
 	return ret;
 }
 
@@ -8323,6 +8331,7 @@ static int nl80211_pmkid(struct i802_bss *bss, int cmd, const u8 *bssid,
 
 	return send_and_recv_msgs(bss->drv, msg, NULL, NULL);
  nla_put_failure:
+	nlmsg_free(msg);
 	return -ENOBUFS;
 }