diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/gr/gf100.c b/drivers/gpu/drm/nouveau/nvkm/engine/gr/gf100.c
index 3648868bb9fc5138d6f94fc281ff49168808028e..cd533d16b96639d582353524fd6e3f3746497a2c 100644
--- a/drivers/gpu/drm/nouveau/nvkm/engine/gr/gf100.c
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/gr/gf100.c
@@ -443,6 +443,7 @@ gf100_gr_chan_new(struct nvkm_gr *base, struct nvkm_chan *fifoch,
 		ret = gf100_grctx_generate(gr, chan, fifoch->inst);
 		if (ret) {
 			nvkm_error(&base->engine.subdev, "failed to construct context\n");
+			mutex_unlock(&gr->fecs.mutex);
 			return ret;
 		}
 	}