iwl3945: fix unbalanced mutex

The patch removes unlocking of mutex from post_associate.
Signed-off-by: NAbhijeet Kolekar <abhijeet.kolekar@intel.com>
Signed-off-by: NZhu Yi <yi.zhu@intel.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

drivers/net/wireless/iwlwifi/iwl3945-base.c

@@ -6339,10 +6339,9 @@ static void iwl3945_post_associate(struct iwl3945_priv *priv)
 	if (test_bit(STATUS_EXIT_PENDING, &priv->status))
 		return;
 
-	if (!priv->vif || !priv->is_open) {
-		mutex_unlock(&priv->mutex);
+	if (!priv->vif || !priv->is_open)
 		return;
-	}
+
 	iwl3945_scan_cancel_timeout(priv, 200);
 
 	conf = ieee80211_get_hw_conf(priv->hw);