drm/nouveau/bar: initialise bar2 during oneinit

If we initialise BAR2 earlier, we're able to complete BAR1 setup using
the instmem fast-path.
Signed-off-by: NBen Skeggs <bskeggs@redhat.com>

drivers/gpu/drm/nouveau/nvkm/subdev/bar/gf100.c

@@ -146,6 +146,9 @@ gf100_bar_oneinit(struct nvkm_bar *base)
 		ret = gf100_bar_oneinit_bar(bar, &bar->bar[0], &bar2_lock, 3);
 		if (ret)
 			return ret;
+
+		bar->base.subdev.oneinit = true;
+		nvkm_bar_bar2_init(bar->base.subdev.device);
 	}
 
 	/* BAR1 */

drivers/gpu/drm/nouveau/nvkm/subdev/bar/nv50.c

@@ -159,6 +159,9 @@ nv50_bar_oneinit(struct nvkm_bar *base)
 	nvkm_wo32(bar->bar2, 0x14, 0x00000000);
 	nvkm_done(bar->bar2);
 
+	bar->base.subdev.oneinit = true;
+	nvkm_bar_bar2_init(device);
+
 	/* BAR1 */
 	start = 0x0000000000ULL;
 	limit = start + device->func->resource_size(device, 1);