Re: [PATCH] qtnfmac: avoid uninitialized variable access

Hello Arnd,

When qtnf_trans_send_cmd_with_resp() fails, we have not yet initialized
'resp', as pointed out by a valid gcc warning:

drivers/net/wireless/quantenna/qtnfmac/commands.c: In function 'qtnf_cmd_send_with_reply':
drivers/net/wireless/quantenna/qtnfmac/commands.c:133:54: error: 'resp' may be used uninitialized in this function [-Werror=maybe-uninitialized]

Since 'resp_skb' is also not set here, we can skip all further
processing and just print the warning and return the failure code.

Fixes: c6ed298ffe09 ("qtnfmac: cleanup and unify command error handling")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

Thanks for the patch! And for reminding me that I forgot to enable
gcc warnings in CI builds in addition to sparse checks.

Reviewed-by: Sergey Matyukevich <redacted>

Regards,
Sergey