btrfs: remove the unnecessary result variables

Return the sysfs_emit() and iterate_object_props() directly instead of
using unnecessary variables.
Reported-by: Zeal Robot <zealci@zte.com.cn>
Reviewed-by: Anand Jain <anand.jain@oracle.com>
Signed-off-by: zhang songyi <zhang.songyi@zte.com.cn>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>

fs/btrfs/props.c

@@ -270,11 +270,8 @@ int btrfs_load_inode_props(struct inode *inode, struct btrfs_path *path)
 {
 	struct btrfs_root *root = BTRFS_I(inode)->root;
 	u64 ino = btrfs_ino(BTRFS_I(inode));
-	int ret;
-
-	ret = iterate_object_props(root, path, ino, inode_prop_iterator, inode);
 
-	return ret;
+	return iterate_object_props(root, path, ino, inode_prop_iterator, inode);
 }
 
 static int prop_compression_validate(const struct btrfs_inode *inode,

fs/btrfs/sysfs.c

@@ -839,11 +839,8 @@ static ssize_t btrfs_sinfo_bg_reclaim_threshold_show(struct kobject *kobj,
 						     char *buf)
 {
 	struct btrfs_space_info *space_info = to_space_info(kobj);
-	ssize_t ret;
-
-	ret = sysfs_emit(buf, "%d\n", READ_ONCE(space_info->bg_reclaim_threshold));
 
-	return ret;
+	return sysfs_emit(buf, "%d\n", READ_ONCE(space_info->bg_reclaim_threshold));
 }
 
 static ssize_t btrfs_sinfo_bg_reclaim_threshold_store(struct kobject *kobj,
@@ -1205,11 +1202,8 @@ static ssize_t btrfs_bg_reclaim_threshold_show(struct kobject *kobj,
 					       char *buf)
 {
 	struct btrfs_fs_info *fs_info = to_fs_info(kobj);
-	ssize_t ret;
-
-	ret = sysfs_emit(buf, "%d\n", READ_ONCE(fs_info->bg_reclaim_threshold));
 
-	return ret;
+	return sysfs_emit(buf, "%d\n", READ_ONCE(fs_info->bg_reclaim_threshold));
 }
 
 static ssize_t btrfs_bg_reclaim_threshold_store(struct kobject *kobj,