drm/radeon: fix error path in kpage allocation
drm/radeon: fix error path in kpage allocation

Index into chunks[] array doesn't look right.

Signed-off-by: Ilija Hadzic <4047f7b2b825492c47262c3bc2aad95c265d5bd5@research.bell-labs.com>
Signed-off-by: Alex Deucher <08dc22c6156113f2deff178e35e3ed9b24d6af9e@amd.com>

TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas