[media] staging: media: cxd2099: use kzalloc to allocate ci pointer of type struct cxd in cxd2099_attach

this does kmalloc and followed by memset, calling kzalloc will actually
sets the allocated memory to zero, use kzalloc instead

Signed-off-by: Devendra Naga <develkernel412222@gmail.com>
Cc: Ralph Metzler <rjkm@metzlerbros.de>
Cc: Oliver Endriss <o.endriss@gmx.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

drivers/staging/media/cxd2099/cxd2099.c

@@ -691,10 +691,9 @@ struct dvb_ca_en50221 *cxd2099_attach(struct cxd2099_cfg *cfg,
 		return NULL;
 	}
 
-	ci = kmalloc(sizeof(struct cxd), GFP_KERNEL);
+	ci = kzalloc(sizeof(struct cxd), GFP_KERNEL);
 	if (!ci)
 		return NULL;
-	memset(ci, 0, sizeof(*ci));
 
 	mutex_init(&ci->lock);
 	memcpy(&ci->cfg, cfg, sizeof(struct cxd2099_cfg));