RDMA/rxe: cleanup some error handling in rxe_verbs.c

RDMA/rxe: cleanup some error handling in rxe_verbs.c

[ Upstream commit 6b9017f14a80e717e39683779116e32437be7986 ]

Instead of 'goto and return', just return directly to
simplify the error handling, and avoid some unnecessary
return value check.

Link: https://lore.kernel.org/r/20221028075053.3990467-1-xuhaoyue1@hisilicon.com
Signed-off-by: Yunsheng Lin <linyunsheng@huawei.com>
Signed-off-by: Haoyue Xu <xuhaoyue1@hisilicon.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Stable-dep-of: 27be7c133294 ("RDMA/rxe: Fix missing memory barriers in rxe_queue.h")
Signed-off-by: Sasha Levin <sashal@kernel.org>