[PATCH] Fix for unintialized variables

[Raghavendra D Prabhu]

Hi,
I have attached (as reply) two patches to one of the drivers in led
subsytem. The return value was not being checked before proceeding
leading to uninitialized values being passed in few places. In the
second patch, I am a bit unclear of the logic in the function being
patched. So modify it if required.
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Raghavendra Prabhu
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