i2c: pca-platform: propagate error from i2c_pca_add_numbered_bus

Rather than returning -ENODEV if i2c_pca_add_numbered_bus() fails,
propagate the error to aid debugging.
Suggested-by: NAndy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: NChris Packham <chris.packham@alliedtelesis.co.nz>
Reviewed-by: NAndy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: NWolfram Sang <wsa@the-dreams.de>

drivers/i2c/busses/i2c-pca-platform.c

@@ -232,9 +232,9 @@ static int i2c_pca_pf_probe(struct platform_device *pdev)
 			return ret;
 	}
 
-	if (i2c_pca_add_numbered_bus(&i2c->adap) < 0) {
-		return -ENODEV;
-	}
+	ret = i2c_pca_add_numbered_bus(&i2c->adap);
+	if (ret)
+		return ret;
 
 	platform_set_drvdata(pdev, i2c);