ASoC: msm8998: fix clock refcount for MI2S/AUXPCM shutdown

For MI2S and AUXPCM shutdown, if clock disable is failed,
do not bother to re-increment clock reference. Otherwise,
next time when startup is called, clock enable will not
be called again, so use case will not work.

Change-Id: I5ce4590d2a2030f9d00f1dba9577396f7685a87b
Signed-off-by: Banajit Goswami <bgoswami@codeaurora.org>