power: supply: core: fix static checker warning

static checker complains, that the block already breaks if IS_ERR(np)
and thus the extra !IS_ERR(np) check in the while condition is
superfluous. Avoid the extra check by using while(true) instead. This
should not change the runtime behavior at all and I expect the binary
to be more or less the same for an optimizing compiler.

Fixes: f368f87 ("power: supply: core: convert to fwnnode")
Reported-by: Dan Carpenter <[email protected]>
Closes: https://lore.kernel.org/linux-pm/[email protected]/
Reviewed-by: Hans de Goede <[email protected]>
Link: https://lore.kernel.org/r/20250707-fix-psy-static-checker-warning-v1-1-42d555c2b68a@collabora.com
Signed-off-by: Sebastian Reichel <[email protected]>

Author: sre

drivers/power/supply/power_supply_core.c

@@ -212,7 +212,7 @@ static int __power_supply_populate_supplied_from(struct power_supply *epsy,
 			break;
 		}
 		fwnode_handle_put(np);
-	} while (!IS_ERR(np));
+	} while (true);
 
 	return 0;
 }