SUNRPC: Fix a bogus get/put in generic_key_to_expire()

BugLink: https://bugs.launchpad.net/bugs/1810967

[ Upstream commit e3d5e573 ]
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Juerg Haefliger <juergh@canonical.com>
Signed-off-by: Kleber Sacilotto de Souza <kleber.souza@canonical.com>

net/sunrpc/auth_generic.c

@@ -272,13 +272,7 @@ static bool generic_key_to_expire(struct rpc_cred *cred)
 {
 	struct auth_cred *acred = &container_of(cred, struct generic_cred,
 						gc_base)->acred;
-	bool ret;
-
-	get_rpccred(cred);
-	ret = test_bit(RPC_CRED_KEY_EXPIRE_SOON, &acred->ac_flags);
-	put_rpccred(cred);
-
-	return ret;
+	return test_bit(RPC_CRED_KEY_EXPIRE_SOON, &acred->ac_flags);
 }
 
 static const struct rpc_credops generic_credops = {