staging: r8188eu: propagate error code in rtw_p2p_get2

rtw_p2p_get2 calls functions that can fail with -EFAULT.
Return the error code from the called functions.

Signed-off-by: Abdun Nihaal <abdun.nihaal@gmail.com>
Link: https://lore.kernel.org/r/818aad89738b66942bb66568081f1953a9494078.1643466748.git.abdun.nihaal@gmail.com


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