xprtrdma: rpcrdma_mr_pop() already does list_del_init()

stable inclusion
from stable-5.10.38
commit 04dad2ca1f5e460296b983d332cff642055c4def
bugzilla: 51875
CVE: NA

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

[ Upstream commit 1363e638 ]

The rpcrdma_mr_pop() earlier in the function has already cleared
out mr_list, so it must not be done again in the error path.

Fixes: 84756894 ("xprtrdma: Remove fr_state")
Signed-off-by: NChuck Lever <chuck.lever@oracle.com>
Signed-off-by: NTrond Myklebust <trond.myklebust@hammerspace.com>
Signed-off-by: NSasha Levin <sashal@kernel.org>
Signed-off-by: NChen Jun <chenjun102@huawei.com>
Acked-by: NWeilong Chen <chenweilong@huawei.com>
Signed-off-by: NZheng Zengkai <zhengzengkai@huawei.com>

net/sunrpc/xprtrdma/frwr_ops.c

@@ -555,7 +555,6 @@ void frwr_unmap_sync(struct rpcrdma_xprt *r_xprt, struct rpcrdma_req *req)
 		mr = container_of(frwr, struct rpcrdma_mr, frwr);
 		bad_wr = bad_wr->next;
 
-		list_del_init(&mr->mr_list);
 		frwr_mr_recycle(mr);
 	}
 }