[PATCH v2] drm/nouveau/secboot: plug memory leak in ls_ucode_img_load_gr() error path

[Christophe JAILLET]

The last goto looks spurious because it releases less resources than the
previous one.
Also free 'img->sig' if 'ls_ucode_img_build()' fails.

Fixes: 9d896f3e41a6 ("drm/nouveau/secboot: abstract LS firmware loading 
functions")

Signed-off-by: Christophe JAILLET <christophe.jail...@wanadoo.fr>
---
v2: update topic
    only free 'img->sig' if 'ls_ucode_img_build()' fails
---
 drivers/gpu/drm/nouveau/nvkm/subdev/secboot/ls_ucode_gr.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/secboot/ls_ucode_gr.c 
b/drivers/gpu/drm/nouveau/nvkm/subdev/secboot/ls_ucode_gr.c
index d1cf02d22db1..1b0c793c0192 100644
--- a/drivers/gpu/drm/nouveau/nvkm/subdev/secboot/ls_ucode_gr.c
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/secboot/ls_ucode_gr.c
@@ -116,6 +116,7 @@ ls_ucode_img_load_gr(const struct nvkm_subdev *subdev, 
struct ls_ucode_img *img,
        ret = nvkm_firmware_get(subdev->device, f, &sig);
        if (ret)
                goto free_data;
+
        img->sig = kmemdup(sig->data, sig->size, GFP_KERNEL);
        if (!img->sig) {
                ret = -ENOMEM;
@@ -126,8 +127,9 @@ ls_ucode_img_load_gr(const struct nvkm_subdev *subdev, 
struct ls_ucode_img *img,
        img->ucode_data = ls_ucode_img_build(bl, code, data,
                                             &img->ucode_desc);
        if (IS_ERR(img->ucode_data)) {
+               kfree(img->sig);
                ret = PTR_ERR(img->ucode_data);
-               goto free_data;
+               goto free_sig;
        }
        img->ucode_size = img->ucode_desc.image_size;
 
-- 
2.11.0