btrfs: make btrfs_sysfs_remove_devices_dir return void

btrfs_sysfs_remove_devices_dir() return value is unused declare it as
void.
Reviewed-by: NNikolay Borisov <nborisov@suse.com>
Reviewed-by: NJosef Bacik <josef@toxicpanda.com>
Signed-off-by: NAnand Jain <anand.jain@oracle.com>
Reviewed-by: NDavid Sterba <dsterba@suse.com>
Signed-off-by: NDavid Sterba <dsterba@suse.com>

fs/btrfs/sysfs.c

@@ -1213,18 +1213,16 @@ static void btrfs_sysfs_remove_device(struct btrfs_device *device)
 }
 
 /* When @device is NULL, remove all devices link */
-int btrfs_sysfs_remove_devices_dir(struct btrfs_fs_devices *fs_devices,
-				   struct btrfs_device *device)
+void btrfs_sysfs_remove_devices_dir(struct btrfs_fs_devices *fs_devices,
+				    struct btrfs_device *device)
 {
 	if (device) {
 		btrfs_sysfs_remove_device(device);
-		return 0;
+		return;
 	}
 
 	list_for_each_entry(device, &fs_devices->devices, dev_list)
 		btrfs_sysfs_remove_device(device);
-
-	return 0;
 }
 
 static ssize_t btrfs_devinfo_in_fs_metadata_show(struct kobject *kobj,

fs/btrfs/sysfs.h

@@ -16,8 +16,8 @@ char *btrfs_printable_features(enum btrfs_feature_set set, u64 flags);
 const char *btrfs_feature_set_name(enum btrfs_feature_set set);
 int btrfs_sysfs_add_devices_dir(struct btrfs_fs_devices *fs_devices,
 		struct btrfs_device *one_device);
-int btrfs_sysfs_remove_devices_dir(struct btrfs_fs_devices *fs_devices,
-                struct btrfs_device *one_device);
+void btrfs_sysfs_remove_devices_dir(struct btrfs_fs_devices *fs_devices,
+				    struct btrfs_device *device);
 int btrfs_sysfs_add_fsid(struct btrfs_fs_devices *fs_devs);
 void btrfs_sysfs_remove_fsid(struct btrfs_fs_devices *fs_devs);
 void btrfs_sysfs_update_sprout_fsid(struct btrfs_fs_devices *fs_devices);