[PATCH 4.7 020/141] drivers/perf: arm_pmu: Fix leak in error path

[Greg Kroah-Hartman]

4.7-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Stefan Wahren <stefan.wahren@xxxxxxxx>

commit 753246840d012ae34ea80a1d40bc1546c62fb957 upstream.

In case of a IRQ type mismatch in of_pmu_irq_cfg() the
device node for interrupt affinity isn't freed. So fix this
issue by calling of_node_put().

Signed-off-by: Stefan Wahren <stefan.wahren@xxxxxxxx>
Fixes: fa8ad7889d83 ("arm: perf: factor arm_pmu core out to drivers")
Signed-off-by: Will Deacon <will.deacon@xxxxxxx>
Signed-off-by: Catalin Marinas <catalin.marinas@xxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

---
 drivers/perf/arm_pmu.c |    1 +
 1 file changed, 1 insertion(+)

--- a/drivers/perf/arm_pmu.c
+++ b/drivers/perf/arm_pmu.c
@@ -921,6 +921,7 @@ static int of_pmu_irq_cfg(struct arm_pmu
 			if (i > 0 && spi != using_spi) {
 				pr_err("PPI/SPI IRQ type mismatch for %s!\n",
 					dn->name);
+				of_node_put(dn);
 				kfree(irqs);
 				return -EINVAL;
 			}