wifi: cfg80211: fix double lock bug in reg_wdev_chan_valid()

The locking was changed recently so now the caller holds the wiphy_lock()
lock.  Taking the lock inside the reg_wdev_chan_valid() function will
lead to a deadlock.

Fixes: f7e6003 ("wifi: cfg80211: fix locking in regulatory disconnect")
Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
Link: https://lore.kernel.org/r/40c4114a-6cb4-4abf-b013-300b598aba65@moroto.mountain
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

Author: Dan Carpenter

net/wireless/reg.c

@@ -2404,11 +2404,8 @@ static bool reg_wdev_chan_valid(struct wiphy *wiphy, struct wireless_dev *wdev)
 		case NL80211_IFTYPE_P2P_GO:
 		case NL80211_IFTYPE_ADHOC:
 		case NL80211_IFTYPE_MESH_POINT:
-			wiphy_lock(wiphy);
 			ret = cfg80211_reg_can_beacon_relax(wiphy, &chandef,
 							    iftype);
-			wiphy_unlock(wiphy);
-
 			if (!ret)
 				return ret;
 			break;