i3c: mipi-i3c-hci-pci: Factor out private registers ioremapping

For neatness, factor out private registers ioremapping.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Reviewed-by: Frank Li <Frank.Li@nxp.com>
Link: https://patch.msgid.link/20251128064038.55158-7-adrian.hunter@intel.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>

Author: ahunter6

drivers/i3c/master/mipi-i3c-hci/mipi-i3c-hci-pci.c

@@ -27,14 +27,18 @@ static DEFINE_IDA(mipi_i3c_hci_pci_ida);
 #define INTEL_RESETS_RESET_DONE		BIT(1)
 #define INTEL_RESETS_TIMEOUT_US		(10 * USEC_PER_MSEC)
 
+static void __iomem *intel_priv(struct pci_dev *pci)
+{
+	resource_size_t base = pci_resource_start(pci, 0);
+
+	return devm_ioremap(&pci->dev, base + INTEL_PRIV_OFFSET, INTEL_PRIV_SIZE);
+}
+
 static int intel_i3c_init(struct pci_dev *pci)
 {
-	void __iomem *priv;
+	void __iomem *priv = intel_priv(pci);
 	u32 reg;
 
-	priv = devm_ioremap(&pci->dev,
-			    pci_resource_start(pci, 0) + INTEL_PRIV_OFFSET,
-			    INTEL_PRIV_SIZE);
 	if (!priv)
 		return -ENOMEM;