staging: wilc1000: use kmemdup instead of kmalloc and memcpy

Kmalloc followed by memcpy can be replaced by kmemdup.
Signed-off-by: HariPrasath Elango <hariprasath.elango@gmail.com>
Reviewed-by: Ajay Singh <ajay.kathat@microchip.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/wilc1000/linux_mon.c

@@ -147,7 +147,7 @@ static int mon_mgmt_tx(struct net_device *dev, const u8 *buf, size_t len)
 	if (!mgmt_tx)
 		return -ENOMEM;
 
-	mgmt_tx->buff = kmalloc(len, GFP_ATOMIC);
+	mgmt_tx->buff = kmemdup(buf, len, GFP_ATOMIC);
 	if (!mgmt_tx->buff) {
 		kfree(mgmt_tx);
 		return -ENOMEM;
@@ -155,7 +155,6 @@ static int mon_mgmt_tx(struct net_device *dev, const u8 *buf, size_t len)
 
 	mgmt_tx->size = len;
 
-	memcpy(mgmt_tx->buff, buf, len);
 	wilc_wlan_txq_add_mgmt_pkt(dev, mgmt_tx, mgmt_tx->buff, mgmt_tx->size,
 				   mgmt_tx_complete);