[PATCH] scsi: Fix a double free in myrs_cleanup

[Lv Yunlong]

In myrs_cleanup, cs->mmio_base will be freed twice by
iounmap().

Fixes: 77266186397c6 ("scsi: myrs: Add Mylex RAID controller (SCSI interface)")
Signed-off-by: Lv Yunlong <lyl2...@mail.ustc.edu.cn>
---
 drivers/scsi/myrs.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/scsi/myrs.c b/drivers/scsi/myrs.c
index 4adf9ded296a..329fd025c718 100644
--- a/drivers/scsi/myrs.c
+++ b/drivers/scsi/myrs.c
@@ -2273,12 +2273,12 @@ static void myrs_cleanup(struct myrs_hba *cs)
        if (cs->mmio_base) {
                cs->disable_intr(cs);
                iounmap(cs->mmio_base);
+               cs->mmio_base = NULL;
        }
        if (cs->irq)
                free_irq(cs->irq, cs);
        if (cs->io_addr)
                release_region(cs->io_addr, 0x80);
-       iounmap(cs->mmio_base);
        pci_set_drvdata(pdev, NULL);
        pci_disable_device(pdev);
        scsi_host_put(cs->host);
-- 
2.25.1