coresight: etm4x: call cpus_read_unlock in error exit



Cpus_read_lock needs to be unlocked when setting up cpu
hotplug callback failed and exiting probe.

Change-Id: Ibbcd49d2e2d993c63b825697bc5799373f8a9a9e
Signed-off-by: Tingwei Zhang <tingwei@codeaurora.org>

parent f5e30025

drivers/hwtracing/coresight/coresight-etm4x.c

+3 −1

Original line number	Diff line number	Diff line
		@@ -1141,8 +1141,10 @@ static int etm4_probe(struct amba_device adev, const struct amba_id id)
		ret = cpuhp_setup_state_nocalls_cpuslocked(CPUHP_AP_ONLINE_DYN,
		"arm/coresight4:online",
		etm4_online_cpu, NULL);
		if (ret < 0)
		if (ret < 0) {
		cpus_read_unlock();
		goto err_arch_supported;
		}
		hp_online = ret;
		}