cfg80211: fix a locking bug

The cfg80211_sme_disassoc() function is already holding
a lock here that cfg80211_mlme_deauth() would take, so
it needs to use __cfg80211_mlme_deauth() instead.
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

net/wireless/sme.c

@@ -826,7 +826,7 @@ void cfg80211_sme_disassoc(struct net_device *dev, int idx)
 		return;
 
 	memcpy(bssid, wdev->auth_bsses[idx]->pub.bssid, ETH_ALEN);
-	if (cfg80211_mlme_deauth(rdev, dev, bssid,
+	if (__cfg80211_mlme_deauth(rdev, dev, bssid,
 				   NULL, 0, WLAN_REASON_DEAUTH_LEAVING)) {
 		/* whatever -- assume gone anyway */
 		cfg80211_unhold_bss(wdev->auth_bsses[idx]);