[v2] cachefiles: fix error return code in cachefiles_ondemand_copen()

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If size < 0; open request will fail, but cachefiles_ondemand_copen return 0.
Fix to return a negative error code.

Fixes: c8383054506c ("cachefiles: notify the user daemon when looking up cookie")
Signed-off-by: Sun Ke <sunke32@xxxxxxxxxx>
---
 fs/cachefiles/ondemand.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/cachefiles/ondemand.c b/fs/cachefiles/ondemand.c
index 1fee702d5529..ea8a1e8317d9 100644
--- a/fs/cachefiles/ondemand.c
+++ b/fs/cachefiles/ondemand.c
@@ -159,7 +159,7 @@ int cachefiles_ondemand_copen(struct cachefiles_cache *cache, char *args)
 	/* fail OPEN request if daemon reports an error */
 	if (size < 0) {
 		if (!IS_ERR_VALUE(size))
-			size = -EINVAL;
+			ret = size = -EINVAL;
 		req->error = size;
 		goto out;
 	}
-- 
2.31.1

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