staging: sm750: move assignment out of if cond

This patch moves the assignments from the if conditions to the line before the condition.
The 3 occurrence are return values and the checks for errors.

Signed-off-by: Michel von Czettritz <michel.von.czettritz@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>