[PATCH] lib: rsa: cosmetic: fix building warning

[Haijun Qin]

Hi,Simon

The toolchain source code we use comes from here(https://github.com/riscv-collab/riscv-gnu-toolchain), but we have made some changes.

> On Wed, 7 Dec 2022 at 03:50, Haijun Qin <qinhaijun at eswincomputing.com> wrote:
> >
> > add initialization of variable 'node',this can aviod the building
> > warning:
> >
> >     'node' may be used uninitialized [-Wmaybe-uninitialized]
> >
> > Signed-off-by: Haijun Qin <qinhaijun at eswincomputing.com>
> > ---
> >  lib/rsa/rsa-sign.c | 2 +-
> >  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> Reviewed-by: Simon Glass <sjg at chromium.org>
> 
> What toolchain is this?
> 
> 
> >
> > diff --git a/lib/rsa/rsa-sign.c b/lib/rsa/rsa-sign.c
> > index b2a21199e4..d20bdb58a5 100644
> > --- a/lib/rsa/rsa-sign.c
> > +++ b/lib/rsa/rsa-sign.c
> > @@ -608,7 +608,7 @@ int rsa_add_verify_data(struct image_sign_info *info, void *keydest)
> >         BIGNUM *modulus, *r_squared;
> >         uint64_t exponent;
> >         uint32_t n0_inv;
> > -       int parent, node;
> > +       int parent, node = -FDT_ERR_NOTFOUND;
> >         char name[100];
> >         int ret;
> >         int bits;
> >
> > base-commit: d2c5607edde2544e059fa871927877213f6bd532
> > --
> > 2.17.1
> >