There is a typo so we call unlock instead of lock.

Fixes: 885dcd709ba9 ("powerpc/perf: Add nest IMC PMU support")
Signed-off-by: Dan Carpenter <dan.carpen...@oracle.com>
---
I also don't understand how the &nest_imc_refc[node_id].lock works.  Why
can't we use ref->lock everywhere?  They seem equivalent, and my static
checker complains if we call the same lock different names.

diff --git a/arch/powerpc/perf/imc-pmu.c b/arch/powerpc/perf/imc-pmu.c
index 46cd912af060..52017f6eafd9 100644
--- a/arch/powerpc/perf/imc-pmu.c
+++ b/arch/powerpc/perf/imc-pmu.c
@@ -1124,7 +1124,7 @@ static void cleanup_all_thread_imc_memory(void)
 static void imc_common_cpuhp_mem_free(struct imc_pmu *pmu_ptr)
 {
        if (pmu_ptr->domain == IMC_DOMAIN_NEST) {
-               mutex_unlock(&nest_init_lock);
+               mutex_lock(&nest_init_lock);
                if (nest_pmus == 1) {
                        
cpuhp_remove_state(CPUHP_AP_PERF_POWERPC_NEST_IMC_ONLINE);
                        kfree(nest_imc_refc);

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