soc: fsl: cpm1: qmc: Set the ret error code on platform_get_irq() failure

A kernel test robot detected a missing error code:
qmc.c:1942 qmc_probe() warn: missing error code 'ret'

Indeed, the error returned by platform_get_irq() is checked and the
operation is aborted in case of failure but the ret error code is
not set in that case.

Set the ret error code.

Reported-by: kernel test robot <[e-mail]>
Reported-by: Dan Carpenter <[e-mail]>
Closes: https://lore.kernel.org/r/[e-mail]/
Fixes: 3178d58e0b97 ("soc: fsl: cpm1: Add support for QMC")
Cc: [e-mail]
Signed-off-by: Herve Codina <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Christophe Leroy <[e-mail]>

drivers/soc/fsl/qe/qmc.c

···
 
 	/* Set the irq handler */
 	irq = platform_get_irq(pdev, 0);
-	if (irq < 0)
+	if (irq < 0) {
+		ret = irq;
 		goto err_exit_xcc;
+	}
 	ret = devm_request_irq(qmc->dev, irq, qmc_irq_handler, 0, "qmc", qmc);
 	if (ret < 0)
 		goto err_exit_xcc;