drm/amdgpu/debugfs: fix memory leak when amdgpu_virt_enable_access_debugfs failed

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 access under SR-IOV")
Signed-off-by: Chen Tao <chentao107@huawei.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c
index 3d0e8f8..0ac9aab 100644 (file)
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c
@@ -941,7 +941,7 @@ static ssize_t amdgpu_debugfs_gpr_read(struct file *f, char __user *buf,
 
        r = amdgpu_virt_enable_access_debugfs(adev);
        if (r < 0)
-               return r;
+               goto err;
 
        /* switch to the specific se/sh/cu */
        mutex_lock(&adev->grbm_idx_mutex);