msm: camera: Don't return error code if array size is zero

i2c write can get invoked initially when conf_array size is zero.
Returning failure code is causing camera failed to launch.

Change-Id: Ic19d8916c5e433020fc7f0558054c26ed3651cdf
Signed-off-by: Suman Mukherjee <sumam@codeaurora.org>
3 files changed