mwl8k: don't overwrite mwl8k_vif::bssid until after disassociation

When disassociating, mac80211 zeroes vif->bss_info.bssid before
calling our ->bss_info_changed(), but we need the BSSID to remove the
hardware station database entry for our AP, so we can't clear our
local copy of the BSSID until after we've done that.
Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

drivers/net/wireless/mwl8k.c

@@ -3025,9 +3025,6 @@ static void mwl8k_bss_info_changed(struct ieee80211_hw *hw,
 	struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
 	int rc;
 
-	if (changed & BSS_CHANGED_BSSID)
-		memcpy(mwl8k_vif->bssid, info->bssid, ETH_ALEN);
-
 	if ((changed & BSS_CHANGED_ASSOC) == 0)
 		return;
 
@@ -3041,6 +3038,8 @@ static void mwl8k_bss_info_changed(struct ieee80211_hw *hw,
 		memcpy(&mwl8k_vif->bss_info, info,
 			sizeof(struct ieee80211_bss_conf));
 
+		memcpy(mwl8k_vif->bssid, info->bssid, ETH_ALEN);
+
 		/* Install rates */
 		rc = mwl8k_update_rateset(hw, vif);
 		if (rc)