dmaengine: qcom_hidma: Remove call to memset after dmam_alloc_coherent

In commit 518a2f1925c3
("dma-mapping: zero memory returned from dma_alloc_*"),
dma_alloc_coherent has already zeroed the memory.
So memset is not needed.

Signed-off-by: Fuqian Huang <[e-mail]>
Acked-by: Sinan Kaya <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Vinod Koul <[e-mail]>

drivers/dma/qcom/hidma_ll.c

···
 	if (!lldev->tre_ring)
 		return NULL;
 
-	memset(lldev->tre_ring, 0, (HIDMA_TRE_SIZE + 1) * nr_tres);
 	lldev->tre_ring_size = HIDMA_TRE_SIZE * nr_tres;
 	lldev->nr_tres = nr_tres;
 
···
 	if (!lldev->evre_ring)
 		return NULL;
 
-	memset(lldev->evre_ring, 0, (HIDMA_EVRE_SIZE + 1) * nr_tres);
 	lldev->evre_ring_size = HIDMA_EVRE_SIZE * nr_tres;
 
 	/* the EVRE ring has to be EVRE_SIZE aligned */