Fixes this compile problem:
```
drivers/net/ethernet/ralink/esw_rt3050.c: In function 'rt3050_esw_init':
drivers/net/ethernet/ralink/esw_rt3050.c:1467:12: error: 'pdev' is used uninitialized [-Werror=uninitialized]
1467 | if (!pdev)
| ^
drivers/net/ethernet/ralink/esw_rt3050.c:1461:33: note: 'pdev' was declared here
1461 | struct platform_device *pdev;
| ^~~~
cc1: all warnings being treated as errors
```
Fixes: 4ffd5aa239 ("treewide: fix coccinelle checks")
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
27e5d7ddd9