driver core: auxiliary bus: fix OF node leak

driver core: auxiliary bus: fix OF node leak

Make sure to drop the OF node reference taken when creating an auxiliary
device using auxiliary_device_create() when the device is later
released.

Fixes: eaa0d30216c1 ("driver core: auxiliary bus: add device creation helpers")
Cc: Jerome Brunet <jbrunet@baylibre.com>
Signed-off-by: Johan Hovold <johan@kernel.org>
Reviewed-by: Danilo Krummrich <dakr@kernel.org>
Reviewed-by: Jerome Brunet <jbrunet@baylibre.com>
Link: https://lore.kernel.org/r/20250708084654.15145-1-johan@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>