mwifiex: don't return zero on failure paths in mwifiex_pcie_init()

If pci_iomap() fails in mwifiex_pcie_init(), it breaks off initialization,
deallocates all resources, but returns zero.
The patch adds -EIO as return value in this case.

Found by Linux Driver Verification project (linuxtesting.org).

Signed-off-by: Alexey Khoroshilov <khoroshilov@ispras.ru>
Acked-by: Bing Zhao <bzhao@marvell.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/drivers/net/wireless/mwifiex/pcie.c b/drivers/net/wireless/mwifiex/pcie.c
index 7415ac8c3ad7..df88e65595c8 100644
--- a/drivers/net/wireless/mwifiex/pcie.c
+++ b/drivers/net/wireless/mwifiex/pcie.c
@@ -1985,6 +1985,7 @@ static int mwifiex_pcie_init(struct mwifiex_adapter *adapter)
         card->pci_mmap = pci_iomap(pdev, 0, 0);
         if (!card->pci_mmap) {
                 dev_err(adapter->dev, "iomap(0) error\n");
+                ret = -EIO;
                 goto err_iomap0;
         }
         ret = pci_request_region(pdev, 2, DRV_NAME);
@@ -1995,6 +1996,7 @@ static int mwifiex_pcie_init(struct mwifiex_adapter *adapter)
         card->pci_mmap1 = pci_iomap(pdev, 2, 0);
         if (!card->pci_mmap1) {
                 dev_err(adapter->dev, "iomap(2) error\n");
+                ret = -EIO;
                 goto err_iomap2;
         }