ext4: remove unneeded if checks before kfree

kfree already checks if its argument is NULL. This fixes two
Coccinelle/coccicheck warnings reported by ifnullfree.cocci.
Signed-off-by: Thorsten Blum <thorsten.blum@toblux.com>
Reviewed-by: Ritesh Harjani (IBM) <ritesh.list@gmail.com>
Link: https://lore.kernel.org/r/20240317153638.2136-2-thorsten.blum@toblux.comSigned-off-by: Theodore Ts'o <tytso@mit.edu>

fs/ext4/super.c

@@ -2078,7 +2078,6 @@ static int unnote_qf_name(struct fs_context *fc, int qtype)
 {
 	struct ext4_fs_context *ctx = fc->fs_private;
 
-	if (ctx->s_qf_names[qtype])
 	kfree(ctx->s_qf_names[qtype]);
 
 	ctx->s_qf_names[qtype] = NULL;
@@ -2484,7 +2483,6 @@ static int parse_options(struct fs_context *fc, char *options)
 			param.size = v_len;
 
 			ret = ext4_parse_param(fc, &param);
-			if (param.string)
 			kfree(param.string);
 			if (ret < 0)
 				return ret;