msm: camera: sensor: Fix memory leaks when sensor probe fails

The power settings for a camera sensor can be parsed and have its memory
never freed in the error path if part of the probe sequence fails after
the power settings are parsed.

Free the power settings in the error paths to fix the memory leaks.

Change-Id: I4227275c770d97163c6a095dbc81338cbfef3bbe
Signed-off-by: Sultanxda <sultanxda@gmail.com>