[PATCH 4.15 46/55] serial: 8250_uniphier: fix error return code in uniphier_uart_probe()

4.15-stable review patch. If anyone has any objections, please let me know. -- From: Wei Yongjun commit 7defa77d2baca4d6eb85234f10f38ab618332e75 upstream. Fix to return a negative error code from the port register error handling case instead of 0, as

[PATCH 4.15 46/55] serial: 8250_uniphier: fix error return code in uniphier_uart_probe()

4.15-stable review patch. If anyone has any objections, please let me know. -- From: Wei Yongjun commit 7defa77d2baca4d6eb85234f10f38ab618332e75 upstream. Fix to return a negative error code from the port register error handling case instead of 0, as done elsewhere in this