alpha: squash lines for immediate return

Remove unneeded variables and assignments.

While we are here, fix the coding style of SMC37c669_read_config():
  - replace whitespaces at the start of lines with tabs
  - remove unneeded whitespaces around parentheses

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Matt Turner <mattst88@gmail.com>

arch/alpha/kernel/pci.c

@@ -379,11 +379,7 @@ alloc_pci_controller(void)
 struct resource * __init
 alloc_resource(void)
 {
-	struct resource *res;
-
-	res = alloc_bootmem(sizeof(*res));
-
-	return res;
+	return alloc_bootmem(sizeof(struct resource));
 }