PCI: ls-gen4: Use to_delayed_work()

Use to_delayed_work() instead of open-coding it.

Signed-off-by: Chen Ni <nichen@iscas.ac.cn>
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Link: https://patch.msgid.link/20250414074241.3954081-1-nichen@iscas.ac.cn

Author: Chen Ni

drivers/pci/controller/mobiveil/pcie-layerscape-gen4.c

@@ -174,8 +174,7 @@ static int ls_g4_pcie_interrupt_init(struct mobiveil_pcie *mv_pci)
 
 static void ls_g4_pcie_reset(struct work_struct *work)
 {
-	struct delayed_work *dwork = container_of(work, struct delayed_work,
-						  work);
+	struct delayed_work *dwork = to_delayed_work(work);
 	struct ls_g4_pcie *pcie = container_of(dwork, struct ls_g4_pcie, dwork);
 	struct mobiveil_pcie *mv_pci = &pcie->pci;
 	u16 ctrl;