[PATCH 2/2] drm/amdgpu/debugfs: fix memory leak when amdgpu_virt_enable_access_debugfs failed

[Chen Tao]

Fix memory leak in amdgpu_debugfs_gpr_read not freeing data when
amdgpu_virt_enable_access_debugfs failed.

Fixes: 95a2f917387a2 ("drm/amdgpu: restrict debugfs register accessunder SR-IOV")
Signed-off-by: Chen Tao <chentao107 at huawei.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c
index bea8c36a53a4..f66ee4b8f04e 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c
@@ -868,8 +868,10 @@ static ssize_t amdgpu_debugfs_gpr_read(struct file *f, char __user *buf,
 	}
 
 	r = amdgpu_virt_enable_access_debugfs(adev);
-	if (r < 0)
+	if (r < 0) {
+		kfree(data);
 		return r;
+	}
 
 	/* switch to the specific se/sh/cu */
 	mutex_lock(&adev->grbm_idx_mutex);
-- 
2.22.0