DebugFS : file/directory creation error handling

Fix error handling of file and directory creation in DebugFS.

The error path should release the file system because no _remove will be called
for this erroneous creation.

Signed-off-by: Mathieu Desnoyers <[e-mail]>
Signed-off-by: Greg Kroah-Hartman <[e-mail]>

fs/debugfs/inode.c

···
 
 	pr_debug("debugfs: creating file '%s'\n",name);
 
-	error = simple_pin_fs(&debug_fs_type, &debugfs_mount, &debugfs_mount_count);
+	error = simple_pin_fs(&debug_fs_type, &debugfs_mount,
+			      &debugfs_mount_count);
 	if (error)
 		goto exit;
 
 	error = debugfs_create_by_name(name, mode, parent, &dentry);
 	if (error) {
 		dentry = NULL;
+		simple_release_fs(&debugfs_mount, &debugfs_mount_count);
 		goto exit;
 	}