[PATCH] dma: fix returnvar.cocci warnings

[Timur Tabi]

Andy Shevchenko wrote:
>> >CC: Sinan Kaya<okaya at codeaurora.org>
>> >Signed-off-by: Fengguang Wu<fengguang.wu at intel.com>
> Who is the author?
> I suppose Fengguang is the reporter, right?
>

These are Julia Lawall's coccinelle scripts that automatically run on 
patches and report problems.  Just treat them like normal code reviews 
and incorporate the change in the next version of your patch.

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