Based on the provided code and the potential vulnerability among CWE-416 (Use After Free) and CWE-476 (NULL Pointer Dereference), focusing on the specified lines, here are five possible patches:

Patch 1:
```
22 	if (np)
22a		of_node_get(np);
```

Patch 2:
```
31 		if (propname)
31a			kfree(propname);
```

Patch 3:
```
86 	if (p)
86a		pinctrl_dt_free_maps(p);
```

Patch 4:
```
22 	np = of_node_get(np);
23 	if (!np)
23a		return -EINVAL;
```

Patch 5:
```
85 err:
86 	of_node_put(np);
87 	pinctrl_dt_free_maps(p);
```