orangefs: fix build warning from debugfs cleanup patch

Stephen writes:
	After merging the driver-core tree, today's linux-next build (x86_64
	allmodconfig) produced this warning:

	fs/orangefs/orangefs-debugfs.c: In function 'orangefs_debugfs_init':
	fs/orangefs/orangefs-debugfs.c:193:1: warning: label 'out' defined but not used [-Wunused-label]
	 out:
	 ^~~
	fs/orangefs/orangefs-debugfs.c: In function 'orangefs_kernel_debug_init':
	fs/orangefs/orangefs-debugfs.c:204:17: warning: unused variable 'ret' [-Wunused-variable]
	  struct dentry *ret;
	                 ^~~
Fix this up and change the return type of the function to void as it can
not fail, which cleans up some more code and variables as well.

Cc: Mike Marshall <hubcap@omnibond.com>
Cc: Martin Brandenburg <martin@omnibond.com>
Cc: devel@lists.orangefs.org
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Fixes: f095adb ("orangefs: no need to check return value of debugfs_create functions")
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

fs/orangefs/orangefs-debugfs.c

@@ -64,7 +64,7 @@ struct client_debug_mask {
 	__u64 mask2;
 };
 
-static int orangefs_kernel_debug_init(void);
+static void orangefs_kernel_debug_init(void);
 
 static int orangefs_debug_help_open(struct inode *, struct file *);
 static void *help_start(struct seq_file *, loff_t *);
@@ -150,10 +150,8 @@ static DEFINE_MUTEX(orangefs_help_file_lock);
  * initialize kmod debug operations, create orangefs debugfs dir and
  * ORANGEFS_KMOD_DEBUG_HELP_FILE.
  */
-int orangefs_debugfs_init(int debug_mask)
+void orangefs_debugfs_init(int debug_mask)
 {
-	int rc = -ENOMEM;
-
 	/* convert input debug mask to a 64-bit unsigned integer */
         orangefs_gossip_debug_mask = (unsigned long long)debug_mask;
 
@@ -188,20 +186,15 @@ int orangefs_debugfs_init(int debug_mask)
 
 	orangefs_debug_disabled = 0;
 
-	rc = orangefs_kernel_debug_init();
-
-out:
-
-	return rc;
+	orangefs_kernel_debug_init();
 }
 
 /*
  * initialize the kernel-debug file.
  */
-static int orangefs_kernel_debug_init(void)
+static void orangefs_kernel_debug_init(void)
 {
 	int rc = -ENOMEM;
-	struct dentry *ret;
 	char *k_buffer = NULL;
 
 	gossip_debug(GOSSIP_DEBUGFS_DEBUG, "%s: start\n", __func__);
@@ -221,12 +214,8 @@ static int orangefs_kernel_debug_init(void)
 	debugfs_create_file(ORANGEFS_KMOD_DEBUG_FILE, 0444, debug_dir, k_buffer,
 			    &kernel_debug_fops);
 
-	rc = 0;
-
 out:
-
 	gossip_debug(GOSSIP_DEBUGFS_DEBUG, "%s: rc:%d:\n", __func__, rc);
-	return rc;
 }
 
 

fs/orangefs/orangefs-debugfs.h

@@ -1,5 +1,5 @@
 /* SPDX-License-Identifier: GPL-2.0 */
-int orangefs_debugfs_init(int);
+void orangefs_debugfs_init(int);
 void orangefs_debugfs_cleanup(void);
 int orangefs_prepare_debugfs_help_string(int);
 int orangefs_debugfs_new_client_mask(void __user *);

fs/orangefs/orangefs-mod.c

@@ -129,9 +129,7 @@ static int __init orangefs_init(void)
 	if (ret)
 		goto cleanup_key_table;
 
-	ret = orangefs_debugfs_init(module_parm_debug_mask);
-	if (ret)
-		goto debugfs_init_failed;
+	orangefs_debugfs_init(module_parm_debug_mask);
 
 	ret = orangefs_sysfs_init();
 	if (ret)
@@ -161,8 +159,6 @@ static int __init orangefs_init(void)
 	orangefs_dev_cleanup();
 
 sysfs_init_failed:
-
-debugfs_init_failed:
 	orangefs_debugfs_cleanup();
 
 cleanup_key_table: