linux-phytec-fsl

MLK-11915-04 ASoC: imx-cs42888: init asrc_np to avoid wild pointer and check return value of set_fmt()

init asrc_np to avoid wild pointer and check return value of
set_fmt(). Reported by Coverity.

Signed-off-by: Zidan Wang <zidan.wang@freescale.com>
(cherry picked from commit 4ccc87a93e180e09b6494fd6c6d81b07dc054e9b)