wifi: mac80211: hold wiphy_lock around concurrency checks

We want to replace the locking in mac80211 by just the wiphy
mutex, so hold the lock here around concurrency checks for
the future where the chanctx_mtx used inside goes away.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

net/mac80211/iface.c

@@ -430,12 +430,13 @@ static int ieee80211_open(struct net_device *dev)
 	if (!is_valid_ether_addr(dev->dev_addr))
 		return -EADDRNOTAVAIL;
 
+	wiphy_lock(sdata->local->hw.wiphy);
 	err = ieee80211_check_concurrent_iface(sdata, sdata->vif.type);
 	if (err)
-		return err;
+		goto out;
 
-	wiphy_lock(sdata->local->hw.wiphy);
 	err = ieee80211_do_open(&sdata->wdev, true);
+out:
 	wiphy_unlock(sdata->local->hw.wiphy);
 
 	return err;