[PATCH] iwlwifi: fix a potential NULL pointer dereference

[Allen Pais]

alloc_workqueue is not checked for errors and as a result,
a potential NULL dereference could occur.

Signed-off-by: Allen Pais <allen.p...@oracle.com>
---
 drivers/net/wireless/intel/iwlwifi/pcie/trans.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/net/wireless/intel/iwlwifi/pcie/trans.c 
b/drivers/net/wireless/intel/iwlwifi/pcie/trans.c
index db62c83..276c26b 100644
--- a/drivers/net/wireless/intel/iwlwifi/pcie/trans.c
+++ b/drivers/net/wireless/intel/iwlwifi/pcie/trans.c
@@ -3655,6 +3655,11 @@ struct iwl_trans *iwl_trans_pcie_alloc(struct pci_dev 
*pdev,
 
        trans_pcie->rba.alloc_wq = alloc_workqueue("rb_allocator",
                                                   WQ_HIGHPRI | WQ_UNBOUND, 1);
+       if (unlikely(!trans_pcie->rba.alloc_wq)) {
+               return -ENOMEM;
+               goto out_free_ict;
+       }
+
        INIT_WORK(&trans_pcie->rba.rx_alloc, iwl_pcie_rx_allocator_work);
 
 #ifdef CONFIG_IWLWIFI_PCIE_RTPM
-- 
1.9.1