Finalize the I/O subsystem.

This is a collective call on the I/O subsystem.

Parameters

[in,out] iosys The handle to the I/O system. IO system descriptor structure. This structure contains the general IO subsystem data and MPI structure

Return values

ierr	: The error return code. Set to PIO_NOERR on success, or an error code otherwise (See PIO_seterrorhandling for more information on how to customize/set error handling)