[PATCH] drm/vc4: remove redundant ret status check

[Eric Anholt]

Colin King <colin.king at canonical.com> writes:

> From: Colin Ian King <colin.king at canonical.com>
>
> At the current point where ret is being checked for non-zero it has
> not changed since it was initialized to zero, hence the check and the
> label unref are redundant and can be removed.

Reviewed-by: Eric Anholt <eric at anholt.net>

I'll put this in my next pull request.
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