[PATCH 1/1] powerpc: fix a memory leak

[Yuanjun Gong]

When one of the methods xive_native_alloc_irq_on_chip, irq_create_mapping
or irq_get_handler_data fails, the function will directly return without
disposing vinst->name and vinst. Fix it.

Fixes: c20e1e299d93 ("powerpc/vas: Alloc and setup IRQ and trigger port 
address")
Signed-off-by: Yuanjun Gong <ruc_gongyuan...@163.com>
---
 arch/powerpc/platforms/powernv/vas.c | 14 +++++++++-----
 1 file changed, 9 insertions(+), 5 deletions(-)

diff --git a/arch/powerpc/platforms/powernv/vas.c 
b/arch/powerpc/platforms/powernv/vas.c
index b65256a63e87..780740b478f0 100644
--- a/arch/powerpc/platforms/powernv/vas.c
+++ b/arch/powerpc/platforms/powernv/vas.c
@@ -54,7 +54,7 @@ static int init_vas_instance(struct platform_device *pdev)
        struct xive_irq_data *xd;
        uint32_t chipid, hwirq;
        struct resource *res;
-       int rc, cpu, vasid;
+       int rc, cpu, vasid, ret;
 
        rc = of_property_read_u32(dn, "ibm,vas-id", &vasid);
        if (rc) {
@@ -102,6 +102,7 @@ static int init_vas_instance(struct platform_device *pdev)
        res = &pdev->resource[3];
        if (res->end > 62) {
                pr_err("Bad 'paste_win_id_shift' in DT, %llx\n", res->end);
+               ret = -ENODEV
                goto free_vinst;
        }
 
@@ -111,21 +112,24 @@ static int init_vas_instance(struct platform_device *pdev)
        if (!hwirq) {
                pr_err("Inst%d: Unable to allocate global irq for chip %d\n",
                                vinst->vas_id, chipid);
-               return -ENOENT;
+               ret = -ENOENT;
+               goto free_vinst;
        }
 
        vinst->virq = irq_create_mapping(NULL, hwirq);
        if (!vinst->virq) {
                pr_err("Inst%d: Unable to map global irq %d\n",
                                vinst->vas_id, hwirq);
-               return -EINVAL;
+               ret = -EINVAL;
+               goto free_vinst;
        }
 
        xd = irq_get_handler_data(vinst->virq);
        if (!xd) {
                pr_err("Inst%d: Invalid virq %d\n",
                                vinst->vas_id, vinst->virq);
-               return -EINVAL;
+               ret = -EINVAL;
+               goto free_vinst;
        }
 
        vinst->irq_port = xd->trig_page;
@@ -168,7 +172,7 @@ static int init_vas_instance(struct platform_device *pdev)
 free_vinst:
        kfree(vinst->name);
        kfree(vinst);
-       return -ENODEV;
+       return ret;
 
 }
 
-- 
2.37.2