misc: mic: 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(struct scatterlist),flags)
...
sg_init_table(x,n)
// </smpl>
Signed-off-by: Julia Lawall <Julia.Lawall@inria.fr>
Link: https://lore.kernel.org/r/1600601186-7420-14-git-send-email-Julia.Lawall@inria.frSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/misc/mic/scif/scif_nodeqp.c

@@ -363,7 +363,7 @@ scif_p2p_setsg(phys_addr_t pa, int page_size, int page_cnt)
 	struct page *page;
 	int i;
 
-	sg = kcalloc(page_cnt, sizeof(struct scatterlist), GFP_KERNEL);
+	sg = kmalloc_array(page_cnt, sizeof(struct scatterlist), GFP_KERNEL);
 	if (!sg)
 		return NULL;
 	sg_init_table(sg, page_cnt);