Bluetooth: btmtk: Remove the resetting step before downloading the fw

Remove the resetting step before downloading the fw, as it may cause
other usb devices to fail to initialise when connected during boot
on kernels 6.11 and newer.

Signed-off-by: Hao Qin <[e-mail]>
Signed-off-by: Luiz Augusto von Dentz <[e-mail]>

drivers/bluetooth/btmtk.c

···
 		break;
 	case 0x7922:
 	case 0x7925:
-		/* Reset the device to ensure it's in the initial state before
-		 * downloading the firmware to ensure.
-		 */
-
-		if (!test_bit(BTMTK_FIRMWARE_LOADED, &btmtk_data->flags))
-			btmtk_usb_subsys_reset(hdev, dev_id);
-		fallthrough;
 	case 0x7961:
 		btmtk_fw_get_filename(fw_bin_name, sizeof(fw_bin_name), dev_id,
 				      fw_version, fw_flavor);
···
 						btmtk_usb_hci_wmt_sync);
 		if (err < 0) {
 			bt_dev_err(hdev, "Failed to set up firmware (%d)", err);
-			clear_bit(BTMTK_FIRMWARE_LOADED, &btmtk_data->flags);
 			return err;
 		}
-
-		set_bit(BTMTK_FIRMWARE_LOADED, &btmtk_data->flags);
 
 		/* It's Device EndPoint Reset Option Register */
 		err = btmtk_usb_uhw_reg_write(hdev, MTK_EP_RST_OPT,