iwlwifi: replace test_and_set_bit by set_bit in clear stations function

This patch replaces test_and_set_bit by set_bit since the bit is not
tested anyway
Signed-off-by: NTomas Winkler <tomas.winkler@intel.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

drivers/net/wireless/iwlwifi/iwl-sta.c

@@ -490,7 +490,7 @@ void iwl_clear_stations_table(struct iwl_priv *priv)
 	/* keep track of static keys */
 	for (i = 0; i < WEP_KEYS_MAX ; i++) {
 		if (priv->wep_keys[i].key_size)
-			test_and_set_bit(i, &priv->ucode_key_table);
+			set_bit(i, &priv->ucode_key_table);
 	}
 
 	spin_unlock_irqrestore(&priv->sta_lock, flags);