scsi: ufs: ti-j721e-ufs: Fix error return in ti_j721e_ufs_probe()

Fix to return error code PTR_ERR() from the error handling case instead of
0.

Link: https://lore.kernel.org/r/20200806070135.67797-1-jingxiangfeng@huawei.com
Fixes: 22617e21 ("scsi: ufs: ti-j721e-ufs: Fix unwinding of pm_runtime changes")
Reviewed-by: Avri Altman <avri.altman@wdc.com>
Signed-off-by: Jing Xiangfeng <jingxiangfeng@huawei.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

drivers/scsi/ufs/ti-j721e-ufs.c

@@ -38,6 +38,7 @@ static int ti_j721e_ufs_probe(struct platform_device *pdev)
 	/* Select MPHY refclk frequency */
 	clk = devm_clk_get(dev, NULL);
 	if (IS_ERR(clk)) {
+		ret = PTR_ERR(clk);
 		dev_err(dev, "Cannot claim MPHY clock.\n");
 		goto clk_err;
 	}