ASoC: SOF: imx8ulp: add missing of_node_put() in imx8ulp_probe()

After using 'res_node' returned by of_parse_phandle(), of_node_put()
need be called to decrease the refcount.

Fixes: fb5319af ("ASoC: SOF: imx: Add i.MX8ULP HW support")
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Link: https://lore.kernel.org/r/20220824013234.375738-2-yangyingliang@huawei.com


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