drm/radeon: avoid a useless memset

Avoid a memset after a call to 'dma_alloc_coherent()'.
This is useless since
commit 518a2f1925 ("dma-mapping: zero memory returned from dma_alloc_*")

Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Christophe JAILLET 2020-07-27 12:34:36 +02:00 • committed by Alex Deucher
commit f5cd85555b