[PATCH] mtd: ck804xrom: fix missing pci device put in error paths

[James Bond]

pci_dev_get increases the refcount of "pdev".
In the error paths, pci_dev_put should be called
to handle the "pdev" and decrease the corresponding refcount.

Fixes: 90afffc8bd79 ("[MTD] [MAPS] Support for BIOS flash chips on the nvidia 
ck804 southbridge")
Signed-off-by: James Bond <jameslouiseb...@gmail.com>
---
 drivers/mtd/maps/ck804xrom.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/mtd/maps/ck804xrom.c b/drivers/mtd/maps/ck804xrom.c
index 460494212f6a..16af8b5ee653 100644
--- a/drivers/mtd/maps/ck804xrom.c
+++ b/drivers/mtd/maps/ck804xrom.c
@@ -195,6 +195,7 @@ static int __init ck804xrom_init_one(struct pci_dev *pdev,
        if (!window->virt) {
                printk(KERN_ERR MOD_NAME ": ioremap(%08lx, %08lx) failed\n",
                        window->phys, window->size);
+               pci_dev_put(pdev);
                goto out;
        }
 
@@ -222,6 +223,7 @@ static int __init ck804xrom_init_one(struct pci_dev *pdev,
 
                if (!map) {
                        printk(KERN_ERR MOD_NAME ": kmalloc failed");
+                       pci_dev_put(pdev);
                        goto out;
                }
                memset(map, 0, sizeof(*map));
@@ -295,6 +297,7 @@ static int __init ck804xrom_init_one(struct pci_dev *pdev,
                if (mtd_device_register(map->mtd, NULL, 0)) {
                        map_destroy(map->mtd);
                        map->mtd = NULL;
+                       pci_dev_put(pdev);
                        goto out;
                }
 
-- 
2.17.1