rpc_xprt_debugfs_register() - atomic_inc_return() usage

[Shuah Khan]

Hi Anna and Trond,

I came across the following while reviewing atomic_inc_return() usages
that cast return value to unsigned

rpc_xprt_debugfs_register()'s atomic_inc_return() usage looks a bit odd.

- cur_id isn't initialized
- id = (unsigned int)atomic_inc_return(&cur_id);

Please note that id is int. Is it expected that cur_id could overflow?
Is there a maximum limit for this value?

thanks,
-- Shuah