s390/uprobes: Use __forward_psw() instead of private implementation

With adjust_psw_addr() the uprobes code contains more or less a private
__forward_psw() implementation. Switch it to use __forward_psw(), and
remove adjust_psw_addr().

Reviewed-by: Alexander Gordeev <[e-mail]>
Signed-off-by: Heiko Carstens <[e-mail]>

arch/s390/kernel/uprobes.c

···
 
 /* Instruction Emulation */
 
-static void adjust_psw_addr(psw_t *psw, unsigned long len)
-{
-	psw->addr = __rewind_psw(*psw, -len);
-}
-
 #define EMU_ILLEGAL_OP		1
 #define EMU_SPECIFICATION	2
 #define EMU_ADDRESSING		3
···
 		}
 		break;
 	}
-	adjust_psw_addr(&regs->psw, ilen);
+	regs->psw.addr = __forward_psw(regs->psw, ilen);
 	switch (rc) {
 	case EMU_ILLEGAL_OP:
 		regs->int_code = ilen << 16 | 0x0001;