qdsp5: audio: Fix crash in audpp driver due to invalid state

AUDPP driver state is not reset if disable fails and this
results in crash as next AUDPP enable assumes that it is
already in enabled state and tries to access some invalid
data

CRs-fixed: 471094
Change-Id: Ibcb5c83e110d2e09f5d3d15c62e12fbbbc040bb4
Signed-off-by: Sriranjan Srikantam <cssrika@codeaurora.org>