clk: si5351: add missing of_node_put

for_each_child_of_node performs an of_node_get on each iteration, so
a break out of the loop requires an of_node_put.

A simplified version of the semantic patch that fixes this problem is as
follows (http://coccinelle.lip6.fr):

// <smpl>
@@
expression root,e;
local idexpression child;
@@

for_each_child_of_node(root, child) {
... when != of_node_put(child)
when != e = child
(
return child;
|
+ of_node_put(child);
? return ...;
)
...
}
// </smpl>

The resulting puts were manually moved to the end of the function for
conciseness.

Signed-off-by: Julia Lawall <[e-mail]>
Signed-off-by: Stephen Boyd <[e-mail]>

drivers/clk/clk-si5351.c

···
 		if (of_property_read_u32(child, "reg", &num)) {
 			dev_err(&client->dev, "missing reg property of %s\n",
 				child->name);
-			return -EINVAL;
+			goto put_child;
 		}
 
 		if (num >= 8 ||
 		    (variant == SI5351_VARIANT_A3 && num >= 3)) {
 			dev_err(&client->dev, "invalid clkout %d\n", num);
-			return -EINVAL;
+			goto put_child;
 		}
 
 		if (!of_property_read_u32(child, "silabs,multisynth-source",
···
 				dev_err(&client->dev,
 					"invalid parent %d for multisynth %d\n",
 					val, num);
-				return -EINVAL;
+				goto put_child;
 			}
 		}
 
···
 					dev_err(&client->dev,
 						"invalid parent %d for clkout %d\n",
 						val, num);
-					return -EINVAL;
+					goto put_child;
 				}
 				pdata->clkout[num].clkout_src =
 					SI5351_CLKOUT_SRC_CLKIN;
···
 				dev_err(&client->dev,
 					"invalid parent %d for clkout %d\n",
 					val, num);
-				return -EINVAL;
+				goto put_child;
 			}
 		}
 
···
 				dev_err(&client->dev,
 					"invalid drive strength %d for clkout %d\n",
 					val, num);
-				return -EINVAL;
+				goto put_child;
 			}
 		}
 
···
 				dev_err(&client->dev,
 					"invalid disable state %d for clkout %d\n",
 					val, num);
-				return -EINVAL;
+				goto put_child;
 			}
 		}
 
···
 	client->dev.platform_data = pdata;
 
 	return 0;
+put_child:
+	of_node_put(child);
+	return -EINVAL;
 }
 #else
 static int si5351_dt_parse(struct i2c_client *client, enum si5351_variant variant)