ASoC: msm: qdsp6v2: fix increasing num_of_popp index twice

This is a bug increasing number of popp twice and easily reaching MAX
value. num_of_popp is used as index to access array, it may cause memory
out of bounce also.

Change-Id: I5a65b660ccb53fb0e546e767ac641b22382518ed
Signed-off-by: Fred Oh <fred@codeaurora.org>