RDMA/bnxt_re: Do not enable congestion control on VFs

Congestion control needs to be enabled only on the PFs. FW fails the
command if issued on VFs. Avoid sending the command on VFs.

Fixes: f13bcef0 ("RDMA/bnxt_re: Enable congestion control by default")
Link: https://lore.kernel.org/r/1684397461-23082-4-git-send-email-selvin.xavier@broadcom.comSigned-off-by: Kalesh AP <kalesh-anakkur.purayil@broadcom.com>
Reviewed-by: Selvin Thyparampil Xavier <selvin.xavier@broadcom.com>
Signed-off-by: Selvin Xavier <selvin.xavier@broadcom.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>

drivers/infiniband/hw/bnxt_re/main.c

@@ -1336,6 +1336,10 @@ static void bnxt_re_setup_cc(struct bnxt_re_dev *rdev, bool enable)
 {
 	struct bnxt_qplib_cc_param cc_param = {};
 
+	/* Do not enable congestion control on VFs */
+	if (rdev->is_virtfn)
+		return;
+
 	/* Currently enabling only for GenP5 adapters */
 	if (!bnxt_qplib_is_chip_gen_p5(rdev->chip_ctx))
 		return;