This patch fixes two memory leaks in the SPI initialization code.

Patch based on old maemo patch by:
Yuri Ershov <ext-yuri.ershov@nokia.com>
Signed-off-by: NGrazvydas Ignotas <notasas@gmail.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>