drm/amdkfd: fix amdkfd use-after-free GP fault
Fix GP fault caused by dev_info() reference to a struct device* after the device has been freed (use after free). kfd_chardev_exit() frees the device so 'kfd_device' should not be used after calling kfd_chardev_exit(). Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
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