ASoC: mediatek: mt8192: Release reserved memory on cleanup

ASoC: mediatek: mt8192: Release reserved memory on cleanup

The MT8192 AFE probe calls of_reserved_mem_device_init() and falls
back to preallocated buffers when no reserved memory region is
available. When the reserved memory assignment succeeds, however, the
driver never releases it.

Register a devm cleanup action after a successful reserved-memory
assignment so the assignment is released on probe failure and driver
unbind.

Fixes: ec4a10ca4a68 ("ASoC: mediatek: use reserved memory or enable buffer pre-allocation")
Cc: stable@vger.kernel.org
Signed-off-by: Cássio Gabriel <cassiogabrielcontato@gmail.com>
Link: https://patch.msgid.link/20260527-asoc-mt8192-probe-cleanup-v1-1-1bb834d05b72@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>