staging: wilc1000: Incorrect pointer passed while getting if handler

In wilc_wlan.c, buffer is being passed to get_if_handler to obtain the
wilc_netdev, while it should be buff_ptr that points to the current
position in buffer that is being processed

Signed-off-by: Adham Abozaeid <adham.abozaeid@microchip.com>

Author: Adham Abozaeid

drivers/staging/wilc1000/wilc_wlan.c

@@ -1337,7 +1337,7 @@ static void wilc_wlan_handle_rx_buff(struct wilc *wilc, u8 *buffer, int size)
 		} else if (pkt_len > 0) {
 			struct net_device *wilc_netdev;
 
-			wilc_netdev = get_if_handler(wilc, buffer);
+			wilc_netdev = get_if_handler(wilc, buff_ptr);
 			if (!wilc_netdev) {
 				PRINT_ER(vif->ndev,
 					 "wilc_netdev in wilc is NULL");