Handle return from request_irq in gsw ethernet driver.
Fix compilation warning:
drivers/net/ethernet/ralink/gsw_mt7620.c: In function 'mtk_gsw_init':
drivers/net/ethernet/ralink/gsw_mt7620.c:236:17: error: ignoring return value of 'request_irq' declared with attribute 'warn_unused_result' [-Werror=unused-result]
236 | request_irq(gsw->irq, gsw_interrupt_mt7620, 0,
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
237 | "gsw", priv);
| ~~~~~~~~~~~~
cc1: all warnings being treated as errors
Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
7f54fa575b