Bluetooth: btmtksdio: Fix hdev->stat.byte_rx accumulation

Accumulate hdev->stat.byte_rx only for valid packets as btmtkuart doing.
Signed-off-by: NSean Wang <sean.wang@mediatek.com>
Signed-off-by: NMarcel Holtmann <marcel@holtmann.org>

drivers/bluetooth/btmtksdio.c

@@ -391,8 +391,6 @@ static int btmtksdio_rx_packet(struct btmtksdio_dev *bdev, u16 rx_size)
 	if (err < 0)
 		goto err_kfree_skb;
 
-	bdev->hdev->stat.byte_rx += rx_size;
-
 	sdio_hdr = (void *)skb->data;
 
 	/* We assume the default error as -EILSEQ simply to make the error path
@@ -457,6 +455,8 @@ static int btmtksdio_rx_packet(struct btmtksdio_dev *bdev, u16 rx_size)
 	/* Complete frame */
 	(&pkts[i])->recv(bdev->hdev, skb);
 
+	bdev->hdev->stat.byte_rx += rx_size;
+
 	return 0;
 
 err_kfree_skb: