staging: rtl8192e: Remove u16 cast for u16 return value

Remove explicit u16 cast of the function Mk16 return value.
The variable hi does not need to be casted explicitly to u16 as it will
already be casted implicitly.

Signed-off-by: Solomon Tan <wjsota@gmail.com>
Link: https://lore.kernel.org/r/20220423130150.161903-8-wjsota@gmail.com


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