MIPS: Cleanup CONFIG_DEBUG_STACK_USAGE version of alloc_thread_info.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
diff --git a/arch/mips/include/asm/thread_info.h b/arch/mips/include/asm/thread_info.h
index 01cc163..845da21 100644
--- a/arch/mips/include/asm/thread_info.h
+++ b/arch/mips/include/asm/thread_info.h
@@ -86,14 +86,7 @@
 #define __HAVE_ARCH_THREAD_INFO_ALLOCATOR
 
 #ifdef CONFIG_DEBUG_STACK_USAGE
-#define alloc_thread_info(tsk)					\
-({								\
-	struct thread_info *ret;				\
-								\
-	ret = kzalloc(THREAD_SIZE, GFP_KERNEL);			\
-								\
-	ret;							\
-})
+#define alloc_thread_info(tsk) kzalloc(THREAD_SIZE, GFP_KERNEL)
 #else
 #define alloc_thread_info(tsk) kmalloc(THREAD_SIZE, GFP_KERNEL)
 #endif