drivers/perf: arm_pmu: Avoid leaking pmu->irq_affinity on error

pmu->irq_affinity will not be freed if an error occurred within
arm_pmu_device_probe after of_pmu_irq_cfg has been called.

Note that in the case of_pmu_irq_cfg is returning an error,
pmu->irq_affinity will not be set, but it should be NULL as pmu was
kzalloc'd. Therefore the result kfree(NULL) is benign.

Signed-off-by: Julien Grall <julien.grall@arm.com>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>

diff --git a/drivers/perf/arm_pmu.c b/drivers/perf/arm_pmu.c
index 95614d2..1b8304e 100644 (file)
--- a/drivers/perf/arm_pmu.c
+++ b/drivers/perf/arm_pmu.c
@@ -1040,6 +1040,7 @@ out_destroy:
 out_free:
        pr_info("%s: failed to register PMU devices!\n",
                of_node_full_name(node));
+       kfree(pmu->irq_affinity);
        kfree(pmu);
        return ret;
 }