Fix the ordering of SetRenderTarget() calls

Avoid binding the same texture as an RT and a UAV.

ScriptableRenderPipeline/HDRenderPipeline/HDRP/Material/SubsurfaceScattering/SubsurfaceScatteringManager.cs

                     {
                         // Currently, Unity does not offer a way to access the GCN HTile even on PS4 and Xbox One.
                         // Therefore, it's computed in a pixel shader, and optimized to only contain the SSS bit.
+
+                        // Clear the HTile texture. TODO: move this to ClearBuffers(). Clear operations must be batched!
+                        HDUtils.SetRenderTarget(cmd, hdCamera, depthStencilBufferRT); // No need for color buffer here
-                        HDUtils.SetRenderTarget(cmd, hdCamera, depthStencilBufferRT); // No need for color buffer here
                         CoreUtils.DrawFullScreen(cmd, m_CopyStencilForSplitLighting, null, 2);
                         cmd.ClearRandomWriteTargets();
                     }