cnss2: modify return value of API for resuming PCIe bus

PCI bus resuming should be treated as fail once MHI
resume fails, to avoid the following operations those
depend on the result.

Change-Id: If3d21abf95cc2816bf6c34cb950ff430eee022d3
CRs-Fixed: 3795957

cnss2/pci.c

@@ -4057,7 +4057,8 @@ int cnss_pci_resume_bus(struct cnss_pci_data *pci_priv)
 	pci_set_master(pci_dev);
 
 skip_enable_pci:
-	cnss_pci_set_mhi_state(pci_priv, CNSS_MHI_RESUME);
+	if (cnss_pci_set_mhi_state(pci_priv, CNSS_MHI_RESUME))
+		ret = -EAGAIN;
 out:
 	return ret;
 }