[PATCH 5.4 127/151] selinux: Fix error return code in sel_ib_pkey_sid_slow()

[Greg Kroah-Hartman]

From: Chen Zhou <chenzho...@huawei.com>

commit c350f8bea271782e2733419bd2ab9bf4ec2051ef upstream.

Fix to return a negative error code from the error handling case
instead of 0 in function sel_ib_pkey_sid_slow(), as done elsewhere
in this function.

Cc: sta...@vger.kernel.org
Fixes: 409dcf31538a ("selinux: Add a cache for quicker retreival of PKey SIDs")
Reported-by: Hulk Robot <hul...@huawei.com>
Signed-off-by: Chen Zhou <chenzho...@huawei.com>
Signed-off-by: Paul Moore <p...@paul-moore.com>
Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>

---
 security/selinux/ibpkey.c |    4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

--- a/security/selinux/ibpkey.c
+++ b/security/selinux/ibpkey.c
@@ -151,8 +151,10 @@ static int sel_ib_pkey_sid_slow(u64 subn
         * is valid, it just won't be added to the cache.
         */
        new = kzalloc(sizeof(*new), GFP_ATOMIC);
-       if (!new)
+       if (!new) {
+               ret = -ENOMEM;
                goto out;
+       }
 
        new->psec.subnet_prefix = subnet_prefix;
        new->psec.pkey = pkey_num;