ASoC: mediatek: Fix error handling in mt8173_max98090_dev_probe

ASoC: mediatek: Fix error handling in mt8173_max98090_dev_probe

Call of_node_put(platform_node) to avoid refcount leak in
the error path.

Fixes: b6528c498f1e ("ASoC: mediatek: Use platform_of_node for machine drivers")
Fixes: 4f5c7a36b8ef ("ASoC: mediatek: mt8173: fix device_node leak")
Signed-off-by: Miaoqian Lin <linmq006@gmail.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Link: https://lore.kernel.org/r/20220404092903.26725-1-linmq006@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>