x86, 64-bit: Fix bstep_iret jump

This jump should be unconditional.
Signed-off-by: NBrian Gerst <brgerst@gmail.com>
LKML-Reference: <1257274925-15713-1-git-send-email-brgerst@gmail.com>
Signed-off-by: NIngo Molnar <mingo@elte.hu>

arch/x86/kernel/entry_64.S

@@ -1501,7 +1501,7 @@ error_kernelspace:
 bstep_iret:
 	/* Fix truncated RIP */
 	movq %rcx,RIP+8(%rsp)
-	je error_swapgs
+	jmp error_swapgs
 END(error_entry)