dmaengine: sh: drop double zeroing

sg_init_table zeroes its first argument, so the allocation of that argument
doesn't have to.

the semantic patch that makes this change is as follows:
(http://coccinelle.lip6.fr/)

// <smpl>
@@
expression x,n,flags;
@@

x =
- kcalloc
+ kmalloc_array
(n,sizeof(*x),flags)
...
sg_init_table(x,n)
// </smpl>

Signed-off-by: Julia Lawall <[e-mail]>

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

drivers/dma/sh/shdma-base.c

···
 	 * Allocate the sg list dynamically as it would consumer too much stack
 	 * space.
 	 */
-	sgl = kcalloc(sg_len, sizeof(*sgl), GFP_KERNEL);
+	sgl = kmalloc_array(sg_len, sizeof(*sgl), GFP_KERNEL);
 	if (!sgl)
 		return NULL;