net: dsa: mv88e6xxx: Remove set but unused variable
We don't act on any errors reading registers while handling watchdog interrupt. Since this is an interrupt handler, we cannot return such errors. So just remove the variable. Signed-off-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
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04844280
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