[PATCH] [v2] drm/vmwgfx: fix a memleak in vmw_gmrid_man_get_node

[Zhipeng Lu]

When ida_alloc_max fails, resources allocated before should be freed,
including *res allocated by kmalloc and ttm_resource_init.

Fixes: d3bcb4b02fe9 ("drm/vmwgfx: switch the TTM backends to self alloc")
Signed-off-by: Zhipeng Lu <alexi...@zju.edu.cn>
---

Changelog:

v2: Adding {} to correct the if statement
---
 drivers/gpu/drm/vmwgfx/vmwgfx_gmrid_manager.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_gmrid_manager.c 
b/drivers/gpu/drm/vmwgfx/vmwgfx_gmrid_manager.c
index ceb4d3d3b965..a0b47c9b33f5 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_gmrid_manager.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_gmrid_manager.c
@@ -64,8 +64,11 @@ static int vmw_gmrid_man_get_node(struct 
ttm_resource_manager *man,
        ttm_resource_init(bo, place, *res);
 
        id = ida_alloc_max(&gman->gmr_ida, gman->max_gmr_ids - 1, GFP_KERNEL);
-       if (id < 0)
+       if (id < 0) {
+               ttm_resource_fini(man, *res);
+               kfree(*res);
                return id;
+       }
 
        spin_lock(&gman->lock);
 
-- 
2.34.1