media: cec: no need to check return value of debugfs_create functions

When calling debugfs functions, there is no need to ever check the
return value.  The function can work or not, but the code logic should
never do something different based on this.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

drivers/media/cec/core/cec-core.c

@@ -359,27 +359,16 @@ int cec_register_adapter(struct cec_adapter *adap,
 	if (!top_cec_dir)
 		return 0;
 
-	adap->cec_dir = debugfs_create_dir(dev_name(&adap->devnode.dev), top_cec_dir);
-	if (IS_ERR_OR_NULL(adap->cec_dir)) {
-		pr_warn("cec-%s: Failed to create debugfs dir\n", adap->name);
-		return 0;
-	}
-	adap->status_file = debugfs_create_devm_seqfile(&adap->devnode.dev,
-		"status", adap->cec_dir, cec_adap_status);
-	if (IS_ERR_OR_NULL(adap->status_file)) {
-		pr_warn("cec-%s: Failed to create status file\n", adap->name);
-		debugfs_remove_recursive(adap->cec_dir);
-		adap->cec_dir = NULL;
-		return 0;
-	}
+	adap->cec_dir = debugfs_create_dir(dev_name(&adap->devnode.dev),
+					   top_cec_dir);
+
+	debugfs_create_devm_seqfile(&adap->devnode.dev, "status", adap->cec_dir,
+				    cec_adap_status);
+
 	if (!adap->ops->error_inj_show || !adap->ops->error_inj_parse_line)
 		return 0;
-	adap->error_inj_file = debugfs_create_file("error-inj", 0644,
-						   adap->cec_dir, adap,
+	debugfs_create_file("error-inj", 0644, adap->cec_dir, adap,
 			    &cec_error_inj_fops);
-	if (IS_ERR_OR_NULL(adap->error_inj_file))
-		pr_warn("cec-%s: Failed to create error-inj file\n",
-			adap->name);
 #endif
 	return 0;
 }

include/media/cec.h

@@ -248,8 +248,6 @@ struct cec_adapter {
 #endif
 
 	struct dentry *cec_dir;
-	struct dentry *status_file;
-	struct dentry *error_inj_file;
 
 	u32 sequence;