[PATCH] bus: Make remove callback return void

[Alexander Shishkin]

Uwe Kleine-König <u.kleine-koenig at pengutronix.de> writes:

> The driver core ignores the return value of this callback because there
> is only little it can do when a device disappears.
>
> This is the final bit of a long lasting cleanup quest where several
> buses were converted to also return void from their remove callback.
> Additionally some resource leaks were fixed that were caused by drivers
> returning an error code in the expectation that the driver won't go
> away.
>
> With struct bus_type::remove returning void it's prevented that newly
> implemented buses return an ignored error code and so don't anticipate
> wrong expectations for driver authors.
>
> Signed-off-by: Uwe Kleine-König <u.kleine-koenig at pengutronix.de>

FWIW, the intel_th bit is

Acked-by: Alexander Shishkin <alexander.shishkin at linux.intel.com>