Revert "SUNRPC: attempt AF_LOCAL connect on setup"

mainline inclusion
from mainline-v5.18-rc6
commit a3d0562d
category: bugfix
bugzilla: https://gitee.com/src-openeuler/kernel/issues/I57MRF
CVE: NA

-------------------------------------------

This reverts commit 7073ea87.

We must not try to connect the socket while the transport is under
construction, because the mechanisms to safely tear it down are not in
place. As the code stands, we end up leaking the sockets on a connection
error.
Reported-by: Nwanghai (M) <wanghai38@huawei.com>
Cc: stable@vger.kernel.org
Signed-off-by: NTrond Myklebust <trond.myklebust@hammerspace.com>
Signed-off-by: NWang Hai <wanghai38@huawei.com>
Reviewed-by: NZhang Xiaoxu <zhangxiaoxu5@huawei.com>
Reviewed-by: NWei Yongjun <weiyongjun1@huawei.com>
Signed-off-by: NYongqiang Liu <liuyongqiang13@huawei.com>

net/sunrpc/xprtsock.c

@@ -2978,9 +2978,6 @@ static struct rpc_xprt *xs_setup_local(struct xprt_create *args)
 		}
 		xprt_set_bound(xprt);
 		xs_format_peer_addresses(xprt, "local", RPCBIND_NETID_LOCAL);
-		ret = ERR_PTR(xs_local_setup_socket(transport));
-		if (ret)
-			goto out_err;
 		break;
 	default:
 		ret = ERR_PTR(-EAFNOSUPPORT);