spi: spi_device memory should be released instead of device.

The memory for dev variable is allocated as a part of
spi_device structure memory which the dev belongs to.
Thus when the memory is released the right pointer is used.

Signed-off-by: Roman Tereshonkov <roman.tereshonkov@nokia.com>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
diff --git a/drivers/spi/spi.c b/drivers/spi/spi.c
index ec429d1..b3a1f92 100644
--- a/drivers/spi/spi.c
+++ b/drivers/spi/spi.c
@@ -41,7 +41,7 @@
 		spi->master->cleanup(spi);
 
 	spi_master_put(spi->master);
-	kfree(dev);
+	kfree(spi);
 }
 
 static ssize_t