drivers: squash lines for immediate return

Remove unneeded variables and assignments.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
diff --git a/drivers/block/sym53c8xx.c b/drivers/block/sym53c8xx.c
index 5daede7..50043e6 100644
--- a/drivers/block/sym53c8xx.c
+++ b/drivers/block/sym53c8xx.c
@@ -284,9 +284,8 @@
  */
 unsigned long swap_script(unsigned long val)
 {
-	unsigned long tmp;
-	tmp = ((val>>24)&0xff) | ((val>>8)&0xff00) | ((val<<8)&0xff0000) | ((val<<24)&0xff000000);
-	return tmp;
+	return ((val >> 24) & 0xff) | ((val >> 8) & 0xff00) |
+		((val << 8) & 0xff0000) | ((val << 24) & 0xff000000);
 }