ata: ahci_xgene: free structure returned by acpi_get_object_info()

acpi_get_object_info() allocates the returned structure, which the
caller has to free when the call succeeds.  Free it when appropriate.

Fixes: c9802a4be661 ("ata: ahci_xgene: Add AHCI Support for 2nd HW version of APM X-Gene SoC AHCI SATA Host controller.")
Signed-off-by: Michał Kępień <kernel@kempniu.pl>
Signed-off-by: Tejun Heo <tj@kernel.org>

1 files changed, 4 insertions, 2 deletions

diff --git a/drivers/ata/ahci_xgene.c b/drivers/ata/ahci_xgene.c
index 73b19b277138..c2b5941d9184 100644
--- a/drivers/ata/ahci_xgene.c
+++ b/drivers/ata/ahci_xgene.c
@@ -821,8 +821,10 @@ static int xgene_ahci_probe(struct platform_device *pdev)
                                 dev_warn(&pdev->dev, "%s: Error reading device info. Assume version1\n",
                                         __func__);
                                 version = XGENE_AHCI_V1;
-                        } else if (info->valid & ACPI_VALID_CID) {
-                                version = XGENE_AHCI_V2;
+                        } else {
+                                if (info->valid & ACPI_VALID_CID)
+                                        version = XGENE_AHCI_V2;
+                                kfree(info);
                         }
                 }
         }