[Nouveau] [PATCH] instmem/gk20a: fix crash during error path

[Thierry Reding]

On Tue, Mar 10, 2015 at 03:46:08PM +0900, Alexandre Courbot wrote:
> If a memory allocation fails when using the DMA allocator,
> gk20a_instobj_dtor_dma() will be called on the failed instmem object.
> At this time, node->handle might not be NULL despite the call to
> dma_alloc_attrs() having failed. node->cpuaddr is the right member to
> check for such a failure, so use it instead.

Indeed. The DMA address handle is in fact the very opposite of 0 in the
failure case (DMA_ERROR_CODE).

Reviewed-by: Thierry Reding <treding at nvidia.com>
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