[patch] thermal: cpu_cooling: check for allocation failure

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If this fails, then we're likely in trouble anyway, but it's nice to
keep the code free from static checker warnings so you don't miss more
important bugs.

Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>

diff --git a/drivers/thermal/cpu_cooling.c b/drivers/thermal/cpu_cooling.c
index c497414..3a01dfd 100644
--- a/drivers/thermal/cpu_cooling.c
+++ b/drivers/thermal/cpu_cooling.c
@@ -329,6 +329,10 @@ static int build_dyn_power_table(struct cpufreq_cooling_device *cpufreq_device,
 	}
 
 	power_table = kcalloc(num_opps, sizeof(*power_table), GFP_KERNEL);
+	if (!power_table) {
+		ret = -ENOMEM;
+		goto unlock;
+	}
 
 	for (freq = 0, i = 0;
 	     opp = dev_pm_opp_find_freq_ceil(dev, &freq), !IS_ERR(opp);
--
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