c446f0d470
Move hw->cfg.mode and hw->addr.mode assignments from hw->ci->cfg_mode
and hw->ci->addr_mode respectively, to be before the subsequent checks
for memory IO mode (and possible ioremap calls in this case).
Also introduce ioremap error checks at both locations. This allows
resources to be properly freed on ioremap failure, as when the caller
of setup_io then subsequently calls release_io via its error path,
release_io can now correctly determine the mode as it has been set
before the ioremap call.
Finally, refactor release_io function so that it will call
release_mem_region in the memory IO case, regardless of whether or not
hw->cfg.p/hw->addr.p are NULL. This means resources are then properly
released on failure.
This properly implements the original reverted commit (
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