[patch] drm/vc4: Fix a couple error codes in vc4_cl_lookup_bos()

[Eric Anholt]

Dan Carpenter <dan.carpenter at oracle.com> writes:

> If the allocation fails the current code returns success.  If
> copy_from_user() fails it returns the number of bytes remaining instead
> of -EFAULT.
>
> Fixes: d5b1a78a772f ("drm/vc4: Add support for drawing 3D frames.")
> Signed-off-by: Dan Carpenter <dan.carpenter at oracle.com>

Reviewed and applied to drm-vc4-next.  Thanks!
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