Investigate segfault for bert in onnxruntime-inference-examples

[ahsan-ca]

Command to reproduce:
/myworkspace/onnxruntime-inference-examples/quantization/nlp/bert/migraphx# python3 e2e_migraphx_bert_example.py --samples 12000 --seq_len 384 --int8 --batch 2 --version 1.1 --cal_ep ROCm

[ahsan-ca]

Put up a fix in PR: microsoft/onnxruntime-inference-examples#512

[ahsan-ca]

Changes picked up in Ted's PR.