[ Upstream commitab2d2a982f] As platform_driver_register() could fail, it should be better to deal with the return value in order to maintain the code consisitency. Fixes:1ab1f239bf("Bluetooth: hci_intel: Add support for platform driver") Signed-off-by: Jiasheng Jiang <jiasheng@iscas.ac.cn> Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Sasha Levin <sashal@kernel.org>