staging: wilc1000: remove rates variable in wilc_edit_station

Instead of using rates variable, it is used as add_sta_info->rates
directly.
Signed-off-by: Chaehyun Lim <chaehyun.lim@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/wilc1000/host_interface.c

@@ -4372,12 +4372,11 @@ int wilc_edit_station(struct wilc_vif *vif,
 
 	memcpy(add_sta_info, sta_param, sizeof(struct add_sta_param));
 	if (add_sta_info->rates_len > 0) {
-		u8 *rates = kmemdup(sta_param->rates,
+		add_sta_info->rates = kmemdup(sta_param->rates,
 					      add_sta_info->rates_len,
 					      GFP_KERNEL);
-		if (!rates)
+		if (!add_sta_info->rates)
 			return -ENOMEM;
-		add_sta_info->rates = rates;
 	}
 
 	result = wilc_mq_send(&hif_msg_q, &msg, sizeof(struct host_if_msg));