misc: hpilo: avoid a useless memset

Avoid a memset after a call to 'dma_alloc_coherent()'.
This is useless since
commit 518a2f19 ("dma-mapping: zero memory returned from dma_alloc_*")
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Link: https://lore.kernel.org/r/20200718070246.338016-1-christophe.jaillet@wanadoo.frSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/misc/hpilo.c

@@ -281,8 +281,6 @@ static int ilo_ccb_setup(struct ilo_hwinfo *hw, struct ccb_data *data, int slot)
 	dma_va = (char *)data->dma_va;
 	dma_pa = data->dma_pa;
 
-	memset(dma_va, 0, data->dma_size);
-
 	dma_va = (char *)roundup((unsigned long)dma_va, ILO_START_ALIGN);
 	dma_pa = roundup(dma_pa, ILO_START_ALIGN);