Missing return in error check in mlir::TFTPU
### Issue type

Bug

### Have you reproduced the bug with TensorFlow Nightly?

No

### Source

source

### TensorFlow version

2.16.1

### Custom code

No

### OS platform and distribution

_No response_

### Mobile device

_No response_

### Python version

_No response_

### Bazel version

_No response_

### GCC/compiler version

_No response_

### CUDA/cuDNN version

_No response_

### GPU model and memory

_No response_

### Current behavior?

Possible null pointer dereference may occur because of missing return in error check:
https://github.com/tensorflow/tensorflow/blob/63bb7339a2bc98af97c61e86eedbbd60c123529c/tensorflow/compiler/mlir/tensorflow/transforms/extract_tpu_copy_with_dynamic_shape_op.cc#L61-L65

### Standalone code to reproduce the issue

```shell
Bug was found with Svace static analyzer
```


### Relevant log output

_No response_