thunderbolt: Retry USB4 block read operation

Especially when accessing retimers over USB4 sideband operations the
possibility to get read errors seems to be higher so make the
usb4_do_read_data() retry a couple of times if it sees any other error
than -ENODEV (device is gone). We can only do this for read side because
it carries the offset as part of metadata (as opposed to writes).

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>

drivers/thunderbolt/usb4.c

@@ -115,11 +115,8 @@ static int usb4_do_read_data(u16 address, void *buf, size_t size,
 
 		ret = read_block(read_block_data, dwaddress, data, dwords);
 		if (ret) {
-			if (ret == -ETIMEDOUT) {
-				if (retries--)
-					continue;
-				ret = -EIO;
-			}
+			if (ret != -ENODEV && retries--)
+				continue;
 			return ret;
 		}