crypto: omap - Removed unused variable "err"

Removed unused variable "err" and directly return "0"

Reported by coccicheck -
./drivers/crypto/omap-aes.c:542:5-8: Unneeded variable: "err". Return "0" on line 551
./drivers/crypto/omap-des.c:530:5-8: Unneeded variable: "err". Return "0" on line 539
Signed-off-by: Rahul Pathak <rpathak@visteon.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

drivers/crypto/omap-aes.c

@@ -539,8 +539,6 @@ static void omap_aes_finish_req(struct omap_aes_dev *dd, int err)
 
 static int omap_aes_crypt_dma_stop(struct omap_aes_dev *dd)
 {
-	int err = 0;
-
 	pr_debug("total: %d\n", dd->total);
 
 	omap_aes_dma_stop(dd);
@@ -548,7 +546,7 @@ static int omap_aes_crypt_dma_stop(struct omap_aes_dev *dd)
 	dmaengine_terminate_all(dd->dma_lch_in);
 	dmaengine_terminate_all(dd->dma_lch_out);
 
-	return err;
+	return 0;
 }
 
 static int omap_aes_check_aligned(struct scatterlist *sg, int total)

drivers/crypto/omap-des.c

@@ -527,8 +527,6 @@ static void omap_des_finish_req(struct omap_des_dev *dd, int err)
 
 static int omap_des_crypt_dma_stop(struct omap_des_dev *dd)
 {
-	int err = 0;
-
 	pr_debug("total: %d\n", dd->total);
 
 	omap_des_dma_stop(dd);
@@ -536,7 +534,7 @@ static int omap_des_crypt_dma_stop(struct omap_des_dev *dd)
 	dmaengine_terminate_all(dd->dma_lch_in);
 	dmaengine_terminate_all(dd->dma_lch_out);
 
-	return err;
+	return 0;
 }
 
 static int omap_des_copy_needed(struct scatterlist *sg)