ppc64: Fix some error return paths in sys_ipc

arch/ppc64/kernel/syscalls.c

 /*
- * linux/arch/ppc/kernel/sys_ppc.c
+ * linux/arch/ppc64/kernel/sys_ppc.c
  *
  *  PowerPC version 
  *    Copyright (C) 1995-1996 Gary Thomas (gdt@linuxppc.org)
@@ -40,7 +40,6 @@
 #include <asm/uaccess.h>
 #include <asm/ipc.h>
 #include <asm/semaphore.h>
-#include <asm/ppcdebug.h>
 #include <asm/time.h>
 
 extern unsigned long wall_jiffies;
@@ -79,6 +78,7 @@ sys_ipc (uint call, int first, int second, long third, void *ptr, long fifth)
 	case SEMCTL: {
 		union semun fourth;
 
+		ret = -EINVAL;
 		if (!ptr)
 			break;
 		if ((ret = get_user(fourth.__pad, (void **)ptr)))
@@ -94,6 +94,7 @@ sys_ipc (uint call, int first, int second, long third, void *ptr, long fifth)
 		case 0: {
 			struct ipc_kludge tmp;
 
+			ret = -EINVAL;
 			if (!ptr)
 				break;
 			if ((ret = copy_from_user(&tmp,
@@ -127,6 +128,7 @@ sys_ipc (uint call, int first, int second, long third, void *ptr, long fifth)
 			break;
 		}
 		case 1:	/* iBCS2 emulator entry point */
+			ret = -EINVAL;
 			if (!segment_eq(get_fs(), get_ds()))
 				break;
 			ret = sys_shmat (first, (char *) ptr, second,