RDMA/bnxt_re: Add missing spin lock initialization

[ Upstream commit 17f2569dce1848080825b8336e6b7c6900193b44 ]

Add the missing initialization of srq lock.

Fixes: 37cb11ac ("RDMA/bnxt_re: Add SRQ support for Broadcom adapters")
Link: https://lore.kernel.org/r/1629343553-5843-3-git-send-email-selvin.xavier@broadcom.com


Signed-off-by: Naresh Kumar PBS <nareshkumar.pbs@broadcom.com>
Signed-off-by: Selvin Xavier <selvin.xavier@broadcom.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>