drivers/gpu/drm/savage/savage_state.c: add missing kfree

Most of the error handling code in this function frees the buffers
kcmd_addr, kvb_addr, and kbox_addr allocated at the beginning of this
function.  These two branches are changed to do the same.

Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: Dave Airlie <airlied@redhat.com>
diff --git a/drivers/gpu/drm/savage/savage_state.c b/drivers/gpu/drm/savage/savage_state.c
index 8a3e315..031aaaf 100644
--- a/drivers/gpu/drm/savage/savage_state.c
+++ b/drivers/gpu/drm/savage/savage_state.c
@@ -1057,7 +1057,8 @@
 				DRM_ERROR("indexed drawing command extends "
 					  "beyond end of command buffer\n");
 				DMA_FLUSH();
-				return -EINVAL;
+				ret = -EINVAL;
+				goto done;
 			}
 			/* fall through */
 		case SAVAGE_CMD_DMA_PRIM:
@@ -1076,7 +1077,7 @@
 				      cmdbuf->vb_stride,
 				      cmdbuf->nbox, cmdbuf->box_addr);
 				if (ret != 0)
-					return ret;
+					goto done;
 				first_draw_cmd = NULL;
 			}
 		}