drm/nouveau: remove nouveau_chan.device

nouveau_chan.device is always the same as nouveau_chan.cli.device,
so there's no need to store it separately.
Signed-off-by: Ben Skeggs <bskeggs@nvidia.com>
Signed-off-by: Danilo Krummrich <dakr@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20240726043828.58966-33-bskeggs@nvidia.com

drivers/gpu/drm/nouveau/nouveau_chan.c

@@ -157,7 +157,6 @@ nouveau_channel_prep(struct nouveau_cli *cli,
 		return -ENOMEM;
 
 	chan->cli = cli;
-	chan->device = device;
 	chan->drm = drm;
 	chan->vmm = nouveau_cli_vmm(cli);
 	atomic_set(&chan->killed, 0);
@@ -364,8 +363,9 @@ nouveau_channel_ctor(struct nouveau_cli *cli, bool priv, u64 runm,
 static int
 nouveau_channel_init(struct nouveau_channel *chan, u32 vram, u32 gart)
 {
-	struct nvif_device *device = chan->device;
-	struct nouveau_drm *drm = chan->drm;
+	struct nouveau_cli *cli = chan->cli;
+	struct nouveau_drm *drm = cli->drm;
+	struct nvif_device *device = &cli->device;
 	struct nv_dma_v0 args = {};
 	int ret, i;
 

drivers/gpu/drm/nouveau/nouveau_chan.h

@@ -13,7 +13,6 @@ struct nouveau_channel {
 	} chan;
 
 	struct nouveau_cli *cli;
-	struct nvif_device *device;
 	struct nouveau_drm *drm;
 	struct nouveau_vmm *vmm;