Fix variables set but not used compilation warnings:

./nouveau_bo.c:1313:17: warning: variable ‘dev’ set but not used 
[-Wunused-but-set-variable]
  struct device *dev;
                 ^~~
./nouveau_bo.c:1337:17: warning: variable ‘dev’ set but not used 
[-Wunused-but-set-variable]
  struct device *dev;
                 ^~~

Reported-by: Hulk Robot <hul...@huawei.com>
Signed-off-by: Zou Wei <zou_...@huawei.com>
---
 drivers/gpu/drm/nouveau/nouveau_bo.c | 4 ----
 1 file changed, 4 deletions(-)

diff --git a/drivers/gpu/drm/nouveau/nouveau_bo.c 
b/drivers/gpu/drm/nouveau/nouveau_bo.c
index 8133377..96f00b5 100644
--- a/drivers/gpu/drm/nouveau/nouveau_bo.c
+++ b/drivers/gpu/drm/nouveau/nouveau_bo.c
@@ -1310,7 +1310,6 @@ nouveau_ttm_tt_populate(struct ttm_bo_device *bdev,
 {
        struct ttm_tt *ttm_dma = (void *)ttm;
        struct nouveau_drm *drm;
-       struct device *dev;
        bool slave = !!(ttm->page_flags & TTM_PAGE_FLAG_SG);
 
        if (ttm_tt_is_populated(ttm))
@@ -1324,7 +1323,6 @@ nouveau_ttm_tt_populate(struct ttm_bo_device *bdev,
        }
 
        drm = nouveau_bdev(bdev);
-       dev = drm->dev->dev;
 
        return ttm_pool_alloc(&drm->ttm.bdev.pool, ttm, ctx);
 }
@@ -1334,14 +1332,12 @@ nouveau_ttm_tt_unpopulate(struct ttm_bo_device *bdev,
                          struct ttm_tt *ttm)
 {
        struct nouveau_drm *drm;
-       struct device *dev;
        bool slave = !!(ttm->page_flags & TTM_PAGE_FLAG_SG);
 
        if (slave)
                return;
 
        drm = nouveau_bdev(bdev);
-       dev = drm->dev->dev;
 
        return ttm_pool_free(&drm->ttm.bdev.pool, ttm);
 }
-- 
2.6.2

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