crypto: omap-sham - irq handler must not clear error code

Signed-off-by: Dmitry Kasatkin <dmitry.kasatkin@nokia.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
diff --git a/drivers/crypto/omap-sham.c b/drivers/crypto/omap-sham.c
index a8de7b8..7ca7075 100644
--- a/drivers/crypto/omap-sham.c
+++ b/drivers/crypto/omap-sham.c
@@ -1084,7 +1084,6 @@
 	omap_sham_read(dd, SHA_REG_CTRL);
 
 	set_bit(FLAGS_OUTPUT_READY, &dd->flags);
-	dd->err = 0;
 	tasklet_schedule(&dd->done_task);
 
 	return IRQ_HANDLED;