tools/thermal: remove unneeded semicolon

Fix the following coccicheck warnings:

./tools/thermal/thermometer/thermometer.c:147:3-4: Unneeded semicolon.
Reported-by: Abaci Robot <abaci@linux.alibaba.com>
Signed-off-by: Jiapeng Chong <jiapeng.chong@linux.alibaba.com>
Link: https://lore.kernel.org/r/20220427030619.81556-2-jiapeng.chong@linux.alibaba.comSigned-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>

tools/thermal/thermometer/thermometer.c

@@ -144,7 +144,7 @@ static int configuration_init(const char *path, struct configuration *config)
 		if (!node) {
 			ERROR("Missing node name '%d'\n", i);
 			return -1;
-		};
+		}
 
 		if (!config_setting_lookup_string(node, "name", &name)) {
 			ERROR("Thermal zone name not found\n");