drm/nouveau: fix minor thinko causing bo moves to not be async on kepler

Reported-by: Maarten Lankhorst <maarten.lankhorst@canonical.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

drivers/gpu/drm/nouveau/nouveau_bo.c

@@ -968,7 +968,7 @@ nouveau_bo_move_m2mf(struct ttm_buffer_object *bo, int evict, bool intr,
 		     bool no_wait_gpu, struct ttm_mem_reg *new_mem)
 {
 	struct nouveau_drm *drm = nouveau_bdev(bo->bdev);
-	struct nouveau_channel *chan = chan = drm->channel;
+	struct nouveau_channel *chan = chan = drm->ttm.chan;
 	struct nouveau_bo *nvbo = nouveau_bo(bo);
 	struct ttm_mem_reg *old_mem = &bo->mem;
 	int ret;
@@ -1052,6 +1052,7 @@ nouveau_bo_move_init(struct nouveau_drm *drm)
 			}
 
 			drm->ttm.move = mthd->exec;
+			drm->ttm.chan = chan;
 			name = mthd->name;
 			break;
 		}

drivers/gpu/drm/nouveau/nouveau_drm.h

@@ -96,6 +96,7 @@ struct nouveau_drm {
 		int (*move)(struct nouveau_channel *,
 			    struct ttm_buffer_object *,
 			    struct ttm_mem_reg *, struct ttm_mem_reg *);
+		struct nouveau_channel *chan;
 		int mtrr;
 	} ttm;