drivers: i3c: i3c_mcux: Fix bug in do_one_xfer

Error check was incorrect, causing wait for complete
not to be done. This can result in emit stop not
working on writes because controller won't do the
stop if it is still busy processing transmit.

Signed-off-by: Mike J. Chen <mjchen@google.com>

drivers/i3c/i3c_mcux.c

@@ -1031,7 +1031,7 @@ static int mcux_i3c_do_one_xfer(I3C_Type *base, struct mcux_i3c_data *data,
 		ret = mcux_i3c_do_one_xfer_write(base, buf, buf_sz, no_ending);
 	}
 
-	if (ret) {
+	if (ret < 0) {
 		goto out_one_xfer;
 	}