staging: r8188eu: drop redundant if check

The check for ETH_P_IP is already performed in the outer if block
and inner if check is redundant. So drop the check.

Signed-off-by: Vihas Makwana <makvihas@gmail.com>
Link: https://lore.kernel.org/r/20220508182400.22433-1-makvihas@gmail.com


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>