IB/srp: Clean up error path in srp_create_target_ib()

Instead of repeating the error unwinding steps in each place an error
can be detected, use the common idiom of gotos into an error flow.

Signed-off-by: Roland Dreier <rolandd@cisco.com>

diff --git a/drivers/infiniband/ulp/srp/ib_srp.c b/drivers/infiniband/ulp/srp/ib_srp.c
index 441ea7c..ed3f9eb 100644 (file)
--- a/drivers/infiniband/ulp/srp/ib_srp.c
+++ b/drivers/infiniband/ulp/srp/ib_srp.c
@@ -232,15 +232,14 @@ static int srp_create_target_ib(struct srp_target_port *target)
                                       srp_recv_completion, NULL, target, SRP_RQ_SIZE, 0);
        if (IS_ERR(target->recv_cq)) {
                ret = PTR_ERR(target->recv_cq);
-               goto out;
+               goto err;
        }
 
        target->send_cq = ib_create_cq(target->srp_host->srp_dev->dev,
                                       srp_send_completion, NULL, target, SRP_SQ_SIZE, 0);
        if (IS_ERR(target->send_cq)) {
                ret = PTR_ERR(target->send_cq);
-               ib_destroy_cq(target->recv_cq);
-               goto out;
+               goto err_recv_cq;
        }
 
        ib_req_notify_cq(target->recv_cq, IB_CQ_NEXT_COMP);
@@ -258,20 +257,26 @@ static int srp_create_target_ib(struct srp_target_port *target)
        target->qp = ib_create_qp(target->srp_host->srp_dev->pd, init_attr);
        if (IS_ERR(target->qp)) {
                ret = PTR_ERR(target->qp);
-               ib_destroy_cq(target->send_cq);
-               ib_destroy_cq(target->recv_cq);
-               goto out;
+               goto err_send_cq;
        }
 
        ret = srp_init_qp(target, target->qp);
-       if (ret) {
-               ib_destroy_qp(target->qp);
-               ib_destroy_cq(target->send_cq);
-               ib_destroy_cq(target->recv_cq);
-               goto out;
-       }
+       if (ret)
+               goto err_qp;
 
-out:
+       kfree(init_attr);
+       return 0;
+
+err_qp:
+       ib_destroy_qp(target->qp);
+
+err_send_cq:
+       ib_destroy_cq(target->send_cq);
+
+err_recv_cq:
+       ib_destroy_cq(target->recv_cq);
+
+err:
        kfree(init_attr);
        return ret;
 }