xhci: cleanup error message if halting the host failed.

The old error message always stated that host was not halted
even after trying a certain time.

Host may fail the halt immediately as well with -ENODEV if device
is removed and returns 0xffffffff.

Use a more generic error message and show return value to know if we
failed with -ETIMEDOUT or -ENODEV
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/usb/host/xhci.c

@@ -113,12 +113,12 @@ int xhci_halt(struct xhci_hcd *xhci)
 
 	ret = xhci_handshake(&xhci->op_regs->status,
 			STS_HALT, STS_HALT, XHCI_MAX_HALT_USEC);
-	if (!ret) {
+	if (ret) {
+		xhci_warn(xhci, "Host halt failed, %d\n", ret);
+		return ret;
+	}
 	xhci->xhc_state |= XHCI_STATE_HALTED;
 	xhci->cmd_ring_state = CMD_RING_STATE_STOPPED;
-	} else
-		xhci_warn(xhci, "Host not halted after %u microseconds.\n",
-				XHCI_MAX_HALT_USEC);
 	return ret;
 }