[PATCH 3/4] drm/radeon: iounmap unused mapping

[Christoph Hellwig]

On Mon, Mar 02, 2020 at 10:34:56PM -0500, Mikel Rychliski wrote:
> Now that pci_platform_rom creates a new mapping to access the ROM
> image, we should remove this mapping after extracting the BIOS.

This and the next patch really need to be folded into the previous
one to avoid regressions (assuming my other suggestion doesn't work
for some reason).