btrfs: lift make_bad_inode into btrfs_iget

We don't need to check is_bad_inode() after the call of
btrfs_read_locked_inode() - it's exactly the same as checking return
value for being non-zero.
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
Reviewed-by: NDavid Sterba <dsterba@suse.com>
Reviewed-by: NNikolay Borisov <nborisov@suse.com>
Signed-off-by: NDavid Sterba <dsterba@suse.com>

fs/btrfs/inode.c

@@ -3771,7 +3771,6 @@ static int btrfs_read_locked_inode(struct inode *inode)
 
 make_bad:
 	btrfs_free_path(path);
-	make_bad_inode(inode);
 	return ret;
 }
 
@@ -5697,12 +5696,13 @@ struct inode *btrfs_iget(struct super_block *s, struct btrfs_key *location,
 		int ret;
 
 		ret = btrfs_read_locked_inode(inode);
-		if (!is_bad_inode(inode)) {
+		if (!ret) {
 			inode_tree_add(inode);
 			unlock_new_inode(inode);
 			if (new)
 				*new = 1;
 		} else {
+			make_bad_inode(inode);
 			unlock_new_inode(inode);
 			iput(inode);
 			ASSERT(ret < 0);