[PATCH 6.9 106/157] irqchip/riscv-intc: Prevent memory leak when riscv_intc_init_common() fails

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

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

From: Sunil V L <sunilvl@xxxxxxxxxxxxxxxx>

commit 0110c4b110477bb1f19b0d02361846be7ab08300 upstream.

When riscv_intc_init_common() fails, the firmware node allocated is not
freed. Add the missing free().

Fixes: 7023b9d83f03 ("irqchip/riscv-intc: Add ACPI support")
Signed-off-by: Sunil V L <sunilvl@xxxxxxxxxxxxxxxx>
Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Reviewed-by: Anup Patel <anup@xxxxxxxxxxxxxx>
Cc: stable@xxxxxxxxxxxxxxx
Link: https://lore.kernel.org/r/20240527081113.616189-1-sunilvl@xxxxxxxxxxxxxxxx
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
 drivers/irqchip/irq-riscv-intc.c |    9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

--- a/drivers/irqchip/irq-riscv-intc.c
+++ b/drivers/irqchip/irq-riscv-intc.c
@@ -253,8 +253,9 @@ IRQCHIP_DECLARE(andes, "andestech,cpu-in
 static int __init riscv_intc_acpi_init(union acpi_subtable_headers *header,
 				       const unsigned long end)
 {
-	struct fwnode_handle *fn;
 	struct acpi_madt_rintc *rintc;
+	struct fwnode_handle *fn;
+	int rc;
 
 	rintc = (struct acpi_madt_rintc *)header;
 
@@ -273,7 +274,11 @@ static int __init riscv_intc_acpi_init(u
 		return -ENOMEM;
 	}
 
-	return riscv_intc_init_common(fn, &riscv_intc_chip);
+	rc = riscv_intc_init_common(fn, &riscv_intc_chip);
+	if (rc)
+		irq_domain_free_fwnode(fn);
+
+	return rc;
 }
 
 IRQCHIP_ACPI_DECLARE(riscv_intc, ACPI_MADT_TYPE_RINTC, NULL,






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