f2fs: optimize the return condition for has_not_enough_free_secs

Instead of evaluating the free_sections and then deciding to return
true/false from that path. We can directly use the evaluation condition
for returning proper value.

Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com>
Signed-off-by: Amit Sahrawat <a.sahrawat@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
diff --git a/fs/f2fs/segment.h b/fs/f2fs/segment.h
index a9417b9..458bf5c 100644
--- a/fs/f2fs/segment.h
+++ b/fs/f2fs/segment.h
@@ -464,10 +464,8 @@
 	if (sbi->por_doing)
 		return false;
 
-	if (free_sections(sbi) <= (node_secs + 2 * dent_secs +
-						reserved_sections(sbi)))
-		return true;
-	return false;
+	return (free_sections(sbi) <= (node_secs + 2 * dent_secs +
+						reserved_sections(sbi)));
 }
 
 static inline int utilization(struct f2fs_sb_info *sbi)