staging: wilc1000: wilc_spi: Compress return logic

Compress return logic. Done using Coccinelle :
@@
local idexpression ret;
expression e;
@@

-ret=
+return
  e;
  -return ret;

Signed-off-by: Namrata A Shettar <namrataashettar@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>