[PATCH] drm: vc4: remove redundant check of plane being non-null

[Eric Anholt]

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

> From: Colin Ian King <colin.king at canonical.com>
>
> The pointer plane is always null on the error path at label 'fail'
> hence the check if it is non-null is redundant. We can therefore
> remove the check and the destruction of plane as well as the fail
> error path and instead just return an -ENOMEM ERR_PTR.
>
> Detected by CoverityScan, CID#1339532 ("Logically Dead Code")
>
> Signed-off-by: Colin Ian King <colin.king at canonical.com>

Reviewed and applied.  Thanks!
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