disp: msm: sde: drop suspend state if commit is skipped

Drop refcount on pm_suspend commit state if atomic
commit is skipped due to failure. It will avoid frame
trigger during pm_resume call.

Change-Id: Iecd98b106454c82c81a1ef9faaf1af4be2bf19e6
Signed-off-by: Dhaval Patel <pdhaval@codeaurora.org>
Signed-off-by: Jayaprakash Madisetty <quic_jmadiset@quicinc.com>