Update Linux to v5.4.2

Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/drivers/net/caif/caif_virtio.c b/drivers/net/caif/caif_virtio.c
index 2814e0d..eb42682 100644
--- a/drivers/net/caif/caif_virtio.c
+++ b/drivers/net/caif/caif_virtio.c
@@ -1,9 +1,9 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * Copyright (C) ST-Ericsson AB 2013
  * Authors: Vicram Arv
  *	    Dmitry Tarnyagin <dmitry.tarnyagin@lockless.no>
  *	    Sjur Brendeland
- * License terms: GNU General Public License (GPL) version 2
  */
 #include <linux/module.h>
 #include <linux/if_arp.h>
@@ -623,11 +623,7 @@
 /* Create debugfs counters for the device */
 static inline void debugfs_init(struct cfv_info *cfv)
 {
-	cfv->debugfs =
-		debugfs_create_dir(netdev_name(cfv->ndev), NULL);
-
-	if (IS_ERR(cfv->debugfs))
-		return;
+	cfv->debugfs = debugfs_create_dir(netdev_name(cfv->ndev), NULL);
 
 	debugfs_create_u32("rx-napi-complete", 0400, cfv->debugfs,
 			   &cfv->stats.rx_napi_complete);