Bluetooth: btusb: Fix atheros firmware download error

Move usb_autopm_get_interface() ahead of setup_on_usb() to prevent
device from sending usb control message in usb suspend mode.

The error message is as below:

[ 83.944103] btusb 1-2:1.1: usb_suspend_interface: status 0
[ 83.944107] btusb 1-2:1.0: usb_suspend_interface: status 0
[ 83.960132] usb 1-2: usb auto-suspend, wakeup 0
[ 83.976156] usb 1-2: usb_suspend_device: status 0
[ 83.976162] usb 1-2: usb_suspend_both: status 0
[ 298.689106] Bluetooth: hci0
[ 298.689399] Bluetooth: hci0: Failed to access otp area (-113)

Signed-off-by: Ethan Hsieh <[e-mail]>
Signed-off-by: Marcel Holtmann <[e-mail]>

drivers/bluetooth/btusb.c

···
 
 	BT_DBG("%s", hdev->name);
 
+	err = usb_autopm_get_interface(data->intf);
+	if (err < 0)
+		return err;
+
 	/* Patching USB firmware files prior to starting any URBs of HCI path
 	 * It is more safe to use USB bulk channel for downloading USB patch
 	 */
···
 		if (err < 0)
 			return err;
 	}
-
-	err = usb_autopm_get_interface(data->intf);
-	if (err < 0)
-		return err;
 
 	data->intf->needs_remote_wakeup = 1;