extcon: fix possible name leak in extcon_dev_register()

extcon: fix possible name leak in extcon_dev_register()

[ Upstream commit e66523c72c9aae0ff0dae6859eb77b04de1e8e5f ]

In the error path after calling dev_set_name(), the device
name is leaked. To fix this, moving dev_set_name() after the
error path and before device_register.

Link: https://lore.kernel.org/lkml/TYZPR01MB4784ADCD3E951E0863F3DB72D5B8A@TYZPR01MB4784.apcprd01.prod.exchangelabs.com/
Signed-off-by: Yaxiong Tian <tianyaxiong@kylinos.cn>
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>