net: mdio: cavium: Remove unneeded simicolons

The recent refactoring to split C22 and C45 introduced two unneeded
semiconons which the kernel test bot reported. Remove them.

Reported-by: kernel test robot <lkp@intel.com>
Fixes: 93641ecb

 ("net: mdio: cavium: Separate C22 and C45 transactions")
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Michael Walle <michael@walle.cc>
Link: https://lore.kernel.org/r/20230115164203.510615-1-andrew@lunn.ch
Signed-off-by: Paolo Abeni <pabeni@redhat.com>