drm/amdgpu: unmap register bar on device init failure

We never unmapped the regiser BAR on failure.

Reported-by: kernel test robot <lkp@intel.com>
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Andrey Grodzovsky <andrey.grodzovsky@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
index 53b9d86..2ff43a3 100644 (file)
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
@@ -3209,13 +3209,13 @@ int amdgpu_device_init(struct amdgpu_device *adev,
        r = amdgpu_device_get_job_timeout_settings(adev);
        if (r) {
                dev_err(adev->dev, "invalid lockup_timeout parameter syntax\n");
-               return r;
+               goto failed_unmap;
        }
 
        /* early init functions */
        r = amdgpu_device_ip_early_init(adev);
        if (r)
-               return r;
+               goto failed_unmap;
 
        /* doorbell bar mapping and doorbell index init*/
        amdgpu_device_doorbell_init(adev);
@@ -3419,6 +3419,10 @@ failed:
        if (boco)
                vga_switcheroo_fini_domain_pm_ops(adev->dev);
 
+failed_unmap:
+       iounmap(adev->rmmio);
+       adev->rmmio = NULL;
+
        return r;
 }