liquidio: Use vzalloc()

Use vzalloc() instead of hand writing it with vmalloc()+memset().
This is less verbose.
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Link: https://lore.kernel.org/r/93b010824d9d92376e8d49b9eb396a0fa0c0ac80.1685216322.git.christophe.jaillet@wanadoo.frSigned-off-by: Paolo Abeni <pabeni@redhat.com>

drivers/net/ethernet/cavium/liquidio/cn23xx_pf_device.c

@@ -719,12 +719,10 @@ static int cn23xx_setup_pf_mbox(struct octeon_device *oct)
 	for (i = 0; i < oct->sriov_info.max_vfs; i++) {
 		q_no = i * oct->sriov_info.rings_per_vf;
 
-		mbox = vmalloc(sizeof(*mbox));
+		mbox = vzalloc(sizeof(*mbox));
 		if (!mbox)
 			goto free_mbox;
 
-		memset(mbox, 0, sizeof(struct octeon_mbox));
-
 		spin_lock_init(&mbox->lock);
 
 		mbox->oct_dev = oct;

drivers/net/ethernet/cavium/liquidio/cn23xx_vf_device.c

@@ -279,12 +279,10 @@ static int cn23xx_setup_vf_mbox(struct octeon_device *oct)
 {
 	struct octeon_mbox *mbox = NULL;
 
-	mbox = vmalloc(sizeof(*mbox));
+	mbox = vzalloc(sizeof(*mbox));
 	if (!mbox)
 		return 1;
 
-	memset(mbox, 0, sizeof(struct octeon_mbox));
-
 	spin_lock_init(&mbox->lock);
 
 	mbox->oct_dev = oct;