spi: zynq-qspi: Add check for clk_enable()

Add check for the return value of clk_enable() to catch the potential
error.

Fixes: c618a90 ("spi: zynq-qspi: Drop GPIO header")
Signed-off-by: Mingwei Zheng <[email protected]>
Signed-off-by: Jiasheng Jiang <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Mark Brown <[email protected]>

Author: zmw12306

drivers/spi/spi-zynq-qspi.c

@@ -379,12 +379,21 @@ static int zynq_qspi_setup_op(struct spi_device *spi)
 {
 	struct spi_controller *ctlr = spi->controller;
 	struct zynq_qspi *qspi = spi_controller_get_devdata(ctlr);
+	int ret;
 
 	if (ctlr->busy)
 		return -EBUSY;
 
-	clk_enable(qspi->refclk);
-	clk_enable(qspi->pclk);
+	ret = clk_enable(qspi->refclk);
+	if (ret)
+		return ret;
+
+	ret = clk_enable(qspi->pclk);
+	if (ret) {
+		clk_disable(qspi->refclk);
+		return ret;
+	}
+
 	zynq_qspi_write(qspi, ZYNQ_QSPI_ENABLE_OFFSET,
 			ZYNQ_QSPI_ENABLE_ENABLE_MASK);