[S390] Make use of kretprobe_assert.

s390 change for git commit 0f95b7fc839bc3272b1bf2325d8748a649bd3534.
That is print kprobes debug data before BUG().

Cc: Ananth N Mavinakayanahalli <[e-mail]>
Cc: Maneesh Soni <[e-mail]>
Signed-off-by: Heiko Carstens <[e-mail]>
Signed-off-by: Martin Schwidefsky <[e-mail]>

arch/s390/kernel/kprobes.c

···
 			break;
 		}
 	}
-	BUG_ON(!orig_ret_address || (orig_ret_address == trampoline_address));
+	kretprobe_assert(ri, orig_ret_address, trampoline_address);
 	regs->psw.addr = orig_ret_address | PSW_ADDR_AMODE;
 
 	reset_current_kprobe();