btsdio: free sk_buff with kfree_skb

free sk_buff with kfree_skb, instead of kree
Signed-off-by: Sergio Luis <sergio@larces.uece.br>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/bluetooth/btsdio.c

@@ -152,7 +152,7 @@ static int btsdio_rx_packet(struct btsdio_data *data)
 
 	err = sdio_readsb(data->func, skb->data, REG_RDAT, len - 4);
 	if (err < 0) {
-		kfree(skb);
+		kfree_skb(skb);
 		return err;
 	}