btrfs: return void in functions without error conditions

Signed-off-by: Jeff Mahoney <jeffm@suse.com>
diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c
index 9774e38..ae7963b 100644
--- a/fs/btrfs/super.c
+++ b/fs/btrfs/super.c
@@ -1408,9 +1408,7 @@
 	if (err)
 		return err;
 
-	err = btrfs_init_compress();
-	if (err)
-		goto free_sysfs;
+	btrfs_init_compress();
 
 	err = btrfs_init_cachep();
 	if (err)
@@ -1451,7 +1449,6 @@
 	btrfs_destroy_cachep();
 free_compress:
 	btrfs_exit_compress();
-free_sysfs:
 	btrfs_exit_sysfs();
 	return err;
 }