staging: wilc1000: linux_mon: fix error code of kmalloc

This patch fixes error codes as -ENOMEM instead of using -EFAULT if
kmalloc is failed.
Signed-off-by: Chaehyun Lim <chaehyun.lim@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/wilc1000/linux_mon.c

@@ -166,14 +166,14 @@ static int mon_mgmt_tx(struct net_device *dev, const u8 *buf, size_t len)
 	mgmt_tx = kmalloc(sizeof(*mgmt_tx), GFP_ATOMIC);
 	if (!mgmt_tx) {
 		PRINT_ER("Failed to allocate memory for mgmt_tx structure\n");
-		return -EFAULT;
+		return -ENOMEM;
 	}
 
 	mgmt_tx->buff = kmalloc(len, GFP_ATOMIC);
 	if (!mgmt_tx->buff) {
 		PRINT_ER("Failed to allocate memory for mgmt_tx buff\n");
 		kfree(mgmt_tx);
-		return -EFAULT;
+		return -ENOMEM;
 	}
 
 	mgmt_tx->size = len;