9p: v9fs_fid_add() can't fail now

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/fs/9p/vfs_inode.c b/fs/9p/vfs_inode.c
index b5340c8..ce601d7 100644
--- a/fs/9p/vfs_inode.c
+++ b/fs/9p/vfs_inode.c
@@ -692,9 +692,7 @@
 				   "inode creation failed %d\n", err);
 			goto error;
 		}
-		err = v9fs_fid_add(dentry, fid);
-		if (err < 0)
-			goto error;
+		v9fs_fid_add(dentry, fid);
 		d_instantiate(dentry, inode);
 	}
 	return ofid;
@@ -830,9 +828,7 @@
 		inode = NULL;
 		goto error;
 	}
-	result = v9fs_fid_add(dentry, fid);
-	if (result < 0)
-		goto error_iput;
+	v9fs_fid_add(dentry, fid);
 inst_out:
 	/*
 	 * If we had a rename on the server and a parallel lookup
@@ -845,7 +841,6 @@
 	if (!IS_ERR(res))
 		return res;
 	result = PTR_ERR(res);
-error_iput:
 	iput(inode);
 error:
 	p9_client_clunk(fid);