Bluetooth: ath3k: reduce pipe setting times in ath3k_load_fwfile()

Invoking usb_sndbulkpipe() on same pipe for same purpose only once is
enough.
Signed-off-by: Adam Lee <adam8157@gmail.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>

drivers/bluetooth/ath3k.c

@@ -288,10 +288,10 @@ static int ath3k_load_fwfile(struct usb_device *udev,
 	sent += size;
 	count -= size;
 
+	pipe = usb_sndbulkpipe(udev, 0x02);
+
 	while (count) {
 		size = min_t(uint, count, BULK_SIZE);
-		pipe = usb_sndbulkpipe(udev, 0x02);
-
 		memcpy(send_buf, firmware->data + sent, size);
 
 		err = usb_bulk_msg(udev, pipe, send_buf, size,