msm: camera: cci: Return failure if cpas start fails

We are reading from cci hw version register even if the cci cpas start
fails, this will lead to a NOC error; To avoid this we need to return
with failure if the cpas start fails.

CRs-Fixed: 2683494
Change-Id: Id8c214ed480dc3286414edffc59515606c4133cd
Signed-off-by: Tony Lijo Jose <tjose@codeaurora.org>