[PATCH] CMA: correct unlock target

[David Rientjes]

On Thu, 29 May 2014, Joonsoo Kim wrote:

> 'cma: Remove potential deadlock situation' introduces per cma area mutex
> for bitmap management. It is good, but there is one mistake. When we
> can't find appropriate area in bitmap, we release cma_mutex global lock
> rather than cma->lock and this is a bug. So fix it.
> 
> Signed-off-by: Joonsoo Kim <iamjoonsoo.kim at lge.com>

Acked-by: David Rientjes <rientjes at google.com>