PCI: dwc: Unindent dw_handle_msi_irq() loop

commit dbe4a09e upstream.

Use "continue" to skip rest of the loop when possible to save an indent
level.  No functional change intended.
Suggested-by: walter harms <wharms@bfs.de>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
[bwh: Backported to 3.16: adjust filename, context]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>

drivers/pci/host/pcie-designware.c

@@ -165,20 +165,19 @@ irqreturn_t dw_handle_msi_irq(struct pcie_port *pp)
 	for (i = 0; i < MAX_MSI_CTRLS; i++) {
 		dw_pcie_rd_own_conf(pp, PCIE_MSI_INTR0_STATUS + i * 12, 4,
 				(u32 *)&val);
-		if (val) {
+		if (!val)
+			continue;
+
 		ret = IRQ_HANDLED;
 		pos = 0;
 		while ((pos = find_next_bit(&val, 32, pos)) != 32) {
-				irq = irq_find_mapping(pp->irq_domain,
-						i * 32 + pos);
-				dw_pcie_wr_own_conf(pp,
-						PCIE_MSI_INTR0_STATUS + i * 12,
+			irq = irq_find_mapping(pp->irq_domain, i * 32 + pos);
+			dw_pcie_wr_own_conf(pp, PCIE_MSI_INTR0_STATUS + i * 12,
 					    4, 1 << pos);
 			generic_handle_irq(irq);
 			pos++;
 		}
 	}
-	}
 
 	return ret;
 }