powerpc/powernv: Remove pnv_eeh_cap_start()

This moves the logic of pnv_eeh_cap_start() to pnv_eeh_find_cap()
as the function is only called by pnv_eeh_find_cap(). The logic
of both functions are pretty simple. No need to have separate
functions.

Signed-off-by: Gavin Shan <gwshan@linux.vnet.ibm.com>
Reviewed-by: Andrew Donnellan <andrew.donnellan@au1.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

arch/powerpc/platforms/powernv/eeh-powernv.c

@@ -281,29 +281,20 @@ static int pnv_eeh_post_init(void)
 	return ret;
 }
 
-static int pnv_eeh_cap_start(struct pci_dn *pdn)
+static int pnv_eeh_find_cap(struct pci_dn *pdn, int cap)
 {
-	u32 status;
+	int pos = PCI_CAPABILITY_LIST;
+	int cnt = 48;   /* Maximal number of capabilities */
+	u32 status, id;
 
 	if (!pdn)
 		return 0;
 
+	/* Check if the device supports capabilities */
 	pnv_pci_cfg_read(pdn, PCI_STATUS, 2, &status);
 	if (!(status & PCI_STATUS_CAP_LIST))
 		return 0;
 
-	return PCI_CAPABILITY_LIST;
-}
-
-static int pnv_eeh_find_cap(struct pci_dn *pdn, int cap)
-{
-	int pos = pnv_eeh_cap_start(pdn);
-	int cnt = 48;   /* Maximal number of capabilities */
-	u32 id;
-
-	if (!pos)
-		return 0;
-
 	while (cnt--) {
 		pnv_pci_cfg_read(pdn, pos, 1, &pos);
 		if (pos < 0x40)