Fix WebGLMultisampleRenderTarget mipmap generation (#22064)

src/renderers/WebGLRenderer.js

@@ -1052,14 +1052,14 @@ function WebGLRenderer( parameters = {} ) {
 
 		if ( _currentRenderTarget !== null ) {
 
-			// Generate mipmap if we're using any kind of mipmap filtering
-
-			textures.updateRenderTargetMipmap( _currentRenderTarget );
-
 			// resolve multisample renderbuffers to a single-sample texture if necessary
 
 			textures.updateMultisampleRenderTarget( _currentRenderTarget );
 
+			// Generate mipmap if we're using any kind of mipmap filtering
+
+			textures.updateRenderTargetMipmap( _currentRenderTarget );
+
 		}
 
 		//