If the call to decode_rc_list() fails due to a memory allocation error,
then we need to truncate the array size to ensure that we only call
kfree() on those pointer that were allocated.
Reported-by: NDavid Ramos <daramos@stanford.edu>
Fixes: 4aece6a1 ("nfs41: cb_sequence xdr implementation")
Cc: stable@vger.kernel.org
Signed-off-by: NTrond Myklebust <trond.myklebust@primarydata.com>