Merge branch 'mlxsw-spectrum_span-Two-minor-adjustments'

Ido Schimmel says:

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mlxsw: spectrum_span: Two minor adjustments

Petr says:

This patch set fixes a couple of nits in mlxsw's SPAN implementation:
two counts of inaccurate variable name and one count of unsuitable error
code, fixed, respectively, in patches #1 and #2.
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Signed-off-by: David S. Miller <davem@davemloft.net>