From b720d54a5caf077011f0dc6ba7792866d2828d16 Mon Sep 17 00:00:00 2001
From: YoungJun Cho <yj44.cho@samsung.com>
Date: Mon, 24 Jun 2013 15:34:21 +0900
Subject: [PATCH] drm/prime: fix to check return of dma_map_sg in prime helper

The dma_map_sg(), in map_dma_buf callback operation of prime helper,
can return 0 when it fails to map, so it needs to release related
resources.

Signed-off-by: YoungJun Cho <yj44.cho@samsung.com>
Signed-off-by: Seung-Woo Kim <sw0312.kim@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
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