RDMA/cxgb4: Fix memory leaks in c4iw_alloc() error paths

c4iw_alloc() bails out without freeing the storage that 'devp' points to.

Picked up by Coverity - CID 1204241.

Fixes: fa658a98a2 ("RDMA/cxgb4: Use the BAR2/WC path for kernel QPs and T5 devices")
Signed-off-by: Christoph Jaeger <christophjaeger@linux.com>
Acked-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>

diff --git a/drivers/infiniband/hw/cxgb4/device.c b/drivers/infiniband/hw/cxgb4/device.c
index f4fa50a..8914ea9 100644 (file)
--- a/drivers/infiniband/hw/cxgb4/device.c
+++ b/drivers/infiniband/hw/cxgb4/device.c
@@ -736,6 +736,7 @@ static struct c4iw_dev *c4iw_alloc(const struct cxgb4_lld_info *infop)
                        pci_resource_len(devp->rdev.lldi.pdev, 2));
                if (!devp->rdev.bar2_kva) {
                        pr_err(MOD "Unable to ioremap BAR2\n");
+                       ib_dealloc_device(&devp->ibdev);
                        return ERR_PTR(-EINVAL);
                }
        } else if (ocqp_supported(infop)) {
@@ -747,6 +748,7 @@ static struct c4iw_dev *c4iw_alloc(const struct cxgb4_lld_info *infop)
                        devp->rdev.lldi.vr->ocq.size);
                if (!devp->rdev.oc_mw_kva) {
                        pr_err(MOD "Unable to ioremap onchip mem\n");
+                       ib_dealloc_device(&devp->ibdev);
                        return ERR_PTR(-EINVAL);
                }
        }