ASoC: mediatek: mt8183: Release reserved memory on cleanup

The MT8183 AFE probe can assign reserved memory with
of_reserved_mem_device_init(), but the assignment is never released on
driver removal or later probe failures.

Register a devm cleanup action so the reserved memory assignment is
released consistently, matching newer Mediatek AFE drivers.

Fixes: ec4a10c ("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-mt8183-probe-cleanup-v1-1-4f4f5593c8d1@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>

Author: CassivsGabriellis

sound/soc/mediatek/mt8183/mt8183-afe-pcm.c

@@ -766,6 +766,11 @@ static const dai_register_cb dai_register_cbs[] = {
 	mt8183_dai_memif_register,
 };
 
+static void mt8183_afe_release_reserved_mem(void *data)
+{
+	of_reserved_mem_device_release(data);
+}
+
 static int mt8183_afe_pcm_dev_probe(struct platform_device *pdev)
 {
 	struct mtk_base_afe *afe;
@@ -794,6 +799,12 @@ static int mt8183_afe_pcm_dev_probe(struct platform_device *pdev)
 	if (ret) {
 		dev_info(dev, "no reserved memory found, pre-allocating buffers instead\n");
 		afe->preallocate_buffers = true;
+	} else {
+		ret = devm_add_action_or_reset(dev,
+					       mt8183_afe_release_reserved_mem,
+					       dev);
+		if (ret)
+			return ret;
 	}
 
 	/* initial audio related clock */