serial: sifive: Fix sifive_serial_console_setup() section

This function is called indirectly from the platform driver probe
function. Even if the driver is built in, it may be probed after
free_initmem() due to deferral or unbinding/binding via sysfs.
Thus the function cannot be marked as __init.

Fixes: 45c054d ("tty: serial: add driver for the SiFive UART")
Cc: stable <[email protected]>
Signed-off-by: Samuel Holland <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Greg Kroah-Hartman <[email protected]>

Author: SiFiveHolland

drivers/tty/serial/sifive.c

@@ -811,7 +811,7 @@ static void sifive_serial_console_write(struct console *co, const char *s,
 	local_irq_restore(flags);
 }
 
-static int __init sifive_serial_console_setup(struct console *co, char *options)
+static int sifive_serial_console_setup(struct console *co, char *options)
 {
 	struct sifive_serial_port *ssp;
 	int baud = SIFIVE_DEFAULT_BAUD_RATE;