spi: tegra210-quad: Fix missin IRQ check in tegra_qspi_probe

[ Upstream commit 47c3e06 ]

This func misses checking for platform_get_irq()'s call and may passes the
negative error codes to request_threaded_irq(), which takes unsigned IRQ #,
causing it to fail with -EINVAL, overriding an original error code.
Stop calling request_threaded_irq() with invalid IRQ #s.

Fixes: 921fc18 ("spi: tegra210-quad: Add support for Tegra210 QSPI controller")
Signed-off-by: Miaoqian Lin <linmq006@gmail.com>
Link: https://lore.kernel.org/r/20220128165956.27821-1-linmq006@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

drivers/spi/spi-tegra210-quad.c

@@ -1240,6 +1240,8 @@ static int tegra_qspi_probe(struct platform_device *pdev)
 
 	tqspi->phys = r->start;
 	qspi_irq = platform_get_irq(pdev, 0);
+	if (qspi_irq < 0)
+		return qspi_irq;
 	tqspi->irq = qspi_irq;
 
 	tqspi->clk = devm_clk_get(&pdev->dev, "qspi");