ASoC: mediatek: mt8195: add missing of_node_put in probe

dp node and hdmi node are retrieved from of_parse_phandle(), so using
of_node_put() on them before return.

Signed-off-by: Trevor Wu <trevor.wu@mediatek.com>
Link: https://lore.kernel.org/r/20210928063520.23927-1-trevor.wu@mediatek.com


Signed-off-by: Mark Brown <broonie@kernel.org>