[mlir][bufferization] Do not access operation after it was replaced (#146860)

Accessing an erased operation will no longer work during a One-Shot
Dialect Conversion.

Author: matthias-springer

mlir/lib/Conversion/BufferizationToMemRef/BufferizationToMemRef.cpp

@@ -111,8 +111,8 @@ struct CloneOpConversion : public OpConversionPattern<bufferization::CloneOp> {
             rewriter.create<memref::CastOp>(op->getLoc(), memrefType, alloc);
     }
 
-    rewriter.replaceOp(op, alloc);
     rewriter.create<memref::CopyOp>(loc, op.getInput(), alloc);
+    rewriter.replaceOp(op, alloc);
     return success();
   }
 };