[patch v2] locks: missing unlock on error in generic_add_lease()

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We should unlock here before returning.

Fixes: df4e8d2c1d2b ('locks: implement delegations')
Acked-by: J. Bruce Fields <bfields@xxxxxxxxxx>
Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
---
v2: Style fix

diff --git a/fs/locks.c b/fs/locks.c
index f99d52b..7b7ed7d 100644
--- a/fs/locks.c
+++ b/fs/locks.c
@@ -1495,7 +1495,8 @@ static int generic_add_lease(struct file *filp, long arg, struct file_lock **flp
 	if (is_deleg && arg == F_WRLCK) {
 		/* Write delegations are not currently supported: */
 		WARN_ON_ONCE(1);
-		return -EINVAL;
+		error = -EINVAL;
+		goto out;
 	}
 
 	error = -EAGAIN;
--
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