drm/amdgpu: enable enforce_isolation sysfs node on VFs

It should be enabled on both bare metal and VFs.

Fixes: e189be9 ("drm/amdgpu: Add enforce_isolation sysfs attribute")
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: Srinivasan Shanmugam <srinivasan.shanmugam@amd.com>
Cc: Amber Lin <Amber.Lin@amd.com>
Reviewed-by: Srinivasan Shanmugam <srinivasan.shanmugam@amd.com>
(cherry picked from commit dc8847b)

Author: alexdeucher

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

@@ -1635,11 +1635,9 @@ int amdgpu_gfx_sysfs_isolation_shader_init(struct amdgpu_device *adev)
 {
 	int r;
 
-	if (!amdgpu_sriov_vf(adev)) {
-		r = device_create_file(adev->dev, &dev_attr_enforce_isolation);
-		if (r)
-			return r;
-	}
+	r = device_create_file(adev->dev, &dev_attr_enforce_isolation);
+	if (r)
+		return r;
 
 	r = device_create_file(adev->dev, &dev_attr_run_cleaner_shader);
 	if (r)
@@ -1650,8 +1648,7 @@ int amdgpu_gfx_sysfs_isolation_shader_init(struct amdgpu_device *adev)
 
 void amdgpu_gfx_sysfs_isolation_shader_fini(struct amdgpu_device *adev)
 {
-	if (!amdgpu_sriov_vf(adev))
-		device_remove_file(adev->dev, &dev_attr_enforce_isolation);
+	device_remove_file(adev->dev, &dev_attr_enforce_isolation);
 	device_remove_file(adev->dev, &dev_attr_run_cleaner_shader);
 }