drivers/net/ftgmac100: adjust code place for function call dependency

This is to prepare for ftgmac100_adjust_link() to call
ftgmac100_reset() directly. Only code places are changed.

Signed-off-by: Heyi Guo <guoheyi@linux.alibaba.com>
Signed-off-by: David S. Miller <davem@davemloft.net>