If no valid transition_latency specified, let's make it default to
CPUFREQ_ETERNAL which is consistent with its definition.

This can save some of the same checkings like this:
        transition_latency = dev_pm_opp_get_max_transition_latency(cpu_dev);
-       if (!transition_latency)
-               transition_latency = CPUFREQ_ETERNAL;
        ret = cpufreq_generic_init(policy, freq_table, transition_latency);

Cc: Viresh Kumar <vireshk@kernel.org>
Cc: Nishanth Menon <nm@ti.com>
Cc: Stephen Boyd <redacted>
Cc: "Rafael J. Wysocki" <redacted>
Signed-off-by: Dong Aisheng <aisheng.dong@nxp.com>
---
 drivers/cpufreq/cpufreq.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c
index 9bf97a3..da07de6 100644
--- a/drivers/cpufreq/cpufreq.c
+++ b/drivers/cpufreq/cpufreq.c

@@ -180,6 +180,8 @@ int cpufreq_generic_init(struct cpufreq_policy *policy,
 		return ret;
 	}
 
+	if (!transition_latency)
+		transition_latency = CPUFREQ_ETERNAL;
 	policy->cpuinfo.transition_latency = transition_latency;
 
 	/*