drm/amd: Use `amdgpu_ucode_*` helpers for UVD

The `amdgpu_ucode_request` helper will ensure that the return code for
missing firmware is -ENODEV so that early_init can fail.

The `amdgpu_ucode_release` helper is for symmetry on unloading.
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Lijo Lazar <lijo.lazar@amd.com>
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/amdgpu/amdgpu_uvd.c

@@ -260,19 +260,11 @@ int amdgpu_uvd_sw_init(struct amdgpu_device *adev)
 		return -EINVAL;
 	}
 
-	r = request_firmware(&adev->uvd.fw, fw_name, adev->dev);
-	if (r) {
-		dev_err(adev->dev, "amdgpu_uvd: Can't load firmware \"%s\"\n",
-			fw_name);
-		return r;
-	}
-
-	r = amdgpu_ucode_validate(adev->uvd.fw);
+	r = amdgpu_ucode_request(adev, &adev->uvd.fw, fw_name);
 	if (r) {
 		dev_err(adev->dev, "amdgpu_uvd: Can't validate firmware \"%s\"\n",
 			fw_name);
-		release_firmware(adev->uvd.fw);
-		adev->uvd.fw = NULL;
+		amdgpu_ucode_release(&adev->uvd.fw);
 		return r;
 	}
 
@@ -397,7 +389,7 @@ int amdgpu_uvd_sw_fini(struct amdgpu_device *adev)
 			amdgpu_ring_fini(&adev->uvd.inst[j].ring_enc[i]);
 	}
 	amdgpu_bo_free_kernel(&adev->uvd.ib_bo, NULL, &addr);
-	release_firmware(adev->uvd.fw);
+	amdgpu_ucode_release(&adev->uvd.fw);
 
 	return 0;
 }