[PATCH] iwlwifi: missing error code in iwl_trans_pcie_alloc()

[Dan Carpenter]

We don't set the error code here so we end up returning ERR_PTR(0) which
is NULL.  The caller doesn't expect that so it results in a NULL
dereference.

Fixes: 2e5d4a8f61dc ("iwlwifi: pcie: Add new configuration to enable MSIX")
Signed-off-by: Dan Carpenter <dan.carpen...@oracle.com>

diff --git a/drivers/net/wireless/intel/iwlwifi/pcie/trans.c 
b/drivers/net/wireless/intel/iwlwifi/pcie/trans.c
index a3c5d3b195ad..24420314f91b 100644
--- a/drivers/net/wireless/intel/iwlwifi/pcie/trans.c
+++ b/drivers/net/wireless/intel/iwlwifi/pcie/trans.c
@@ -3100,7 +3100,8 @@ struct iwl_trans *iwl_trans_pcie_alloc(struct pci_dev 
*pdev,
        init_waitqueue_head(&trans_pcie->d0i3_waitq);
 
        if (trans_pcie->msix_enabled) {
-               if (iwl_pcie_init_msix_handler(pdev, trans_pcie))
+               ret = iwl_pcie_init_msix_handler(pdev, trans_pcie);
+               if (ret)
                        goto out_no_pci;
         } else {
                ret = iwl_pcie_alloc_ict(trans);